Teacher Practical Guidance:

Collective Teacher Efficacy (Collaboration)

Category: Assessment & Planning

Rank Order

1

Effect Size

1.34

Achievement Gain %

41

How-To Strategies

BENEFITS


  • Research syntheses show CTE has an effect size around 1.34, making it one of the most powerful predictors of student achievement among school-based factors.

 

  • Collective Teacher Efficacy (CTE) Is more predictive of achievement than socioeconomic status, prior achievement, home environment, or student motivation.

 

  • In schools with strong CTE, students’ home background (income, parental education, and other demographics) becomes less determinative of academic outcomes.

 

  • When teachers believe, as a group, they can impact outcomes, they more consistently use high-yield instructional strategies.

 

  • Strong CTE encourages teachers to leverage and share existing expertise, collaborate on problem-solving, and align around evidence-based practices.

 

  • CTE is associated with higher levels of trust, collaboration, and professional commitment.

 

  • Teachers in high-CTE settings report greater motivation, commitment, and willingness to engage in professional learning and team-based work.These schools tend to exhibit positive climate, consistent high expectations for all students, and greater adaptability in the face of challenges.

 

  • Collective efficacy reinforces individual teacher efficacy, helping teachers believe both “I can” and “we can,” which amplifies impact on students.

 

  • As teams experience success together (mastery experiences), their shared confidence and capacity continue to grow, creating a virtuous cycle of improvement.

 

  • Helps staff manage stress, fear, and anxiety and sustain effort despite setbacks.link

 

 

(CTE) PLC Core Beliefs


  • “We have a restless focus on our impact on each student’s learning.”

 

  • “Sustained improvement requires a collective effort.”

 

  • “If something is not working, blaming students or circumstances won’t help. What will help is adjusting how we think, and what we do.”

 

  • “We need to critically interpret a variety of data together to enhance our impact.”

 

  • “We will accept the difficult facts and act on them.”

 

  • “We need each other to truly address the needs of all of our students.”

 

  • Utilization of evidence-based practices offers the best source of strategies and methods.” Hattie, et.al. (2024, pg. 97)

 

 

 

HOW TO


  • Step 1: Establish purpose, norms, and a common goal:  Co‑construct a clear team goal tied to student learning (e.g., “one year’s growth for one year’s instruction in 6th grade reading”).

 

  • Clarify who is on the team, why they’re there, and shared norms (psychological safety, evidence focus, commitments to act).

 

  • Principals emphasize and provide time for all teachers to collectively meet on regular basis to engage in PLC process.

 

  • CTE / PLC training provided with implementation fidelity for all staff

 

  • Step 2: Identify a common instructional challenge: Use recent, concrete evidence (pre‑assessments, common tasks, work samples) to identify one shared need all team members see in their students.

 

  • Step 3: Select and learn a shared, evidence-based strategy: As a team, choose one high‑impact, research‑based practice to address that need, rather than everyone trying different things.

 

  • Unlearning an emphasis on student deficits to one emphasizing student strengths and acceleration

 

  • Use PLC time for job‑embedded learning: read a short article, watch a video, or examine a model lesson together and unpack how the strategy works.

 

  • Step 4: Plan and implement “safe practice”. Co‑plan how each teacher will use the chosen strategy.

 

  • Run a “safe practice” phase (often ~2 weeks) where teachers try the strategy multiple times without formal evaluation, focusing on learning and adjustment.

 

  • Step 5: Open up practice and calibrate:  Schedule structured peer observations focused on the shared strategy, with pre‑agreed look‑fors and specific feedback asks from the host teacher.

 

  • Step 6: Monitor, measure, and reflect on impact: Collect simple, comparable evidence (common assessments, short exit tasks, exemplar sets) from all classrooms using the strategy.

 

  • Step 7: Celebrate wins and build the narrative.  Publicly acknowledge team successes—small and large—in meetings, newsletters, and informal spaces to reinforce “our actions changed outcomes.”  link

 

 

 

PLC QUESTIONS


1. What am I teaching and to whom?

2. Why am I teaching it?

3. How am I teaching it?

4. Why am I teaching it that way?

5. What evidence will I collect to show my kids are getting it?

6. How will my students know they are getting it?  link

 

 

 

CONDITIONS for CTE


  • Experience Mastery – Success breed success. When we experience success we continue the process.

 

  • Modeling – When we see others succeed, then we try. “If they can do it, I can do it.” Modeling provides a model of what is possible.

 

  • Social Persuasion – Encouragement from others builds capacity, when we trust the people who encourage us.

 

  • Avoid Stress  – When we experience stress, our self-efficacy is reduced…instead we move to flight, fight, or freeze situations.

 

  • Visualize – If you can visualize it you can do it.  Paint the picture of the likely outcome.

 

  • Impact Evidence – If you see student and team success it will create more success.  It has a multiplying power. Hattie (2024, pg. 90)

 

 

 

CHALLENGES


  • Not enough time for PLC meetings with inconsistent schedules

 

  • Teachers not taught skills to be effective collaborative team (Adaptive Schools)

 

  • Not enough upfront and on-going PLC training to support teachers on the journey (PLC Solution Tree)

 

  • Upfront work stalls – lack of pacing guides, lack of agreement on power standards, activities and materials

 

  • Unclear mission and vision with teachers still “blaming” students, poverty, parents etc for lack of student success

 

  • Regular adult conflict as PLC work “bumps against” school norms and culture

 

  • Difficulty creating common formative assessment

 

  • Teachers withholding negative data and not engaging in solution conversations

 

  • Individual teachers engaging in teaching methods and content off-schedule

 

  • Teachers struggling with solutions to students not learning – they lack knowledge and access to evidence-based resources and rarely use student strengths during intervention planning

 

  • Interventions applied for short period of time with limited discussion, review of data and follow-up

 

  • No opportunities are provided for students who already are proficient with material. Lefstein (2020)

 

 

 

WHAT NOT TO DO


  • Do not treat CTE as posters, quotes, or pep talks without changing how teams work with evidence and instruction.

 

  • Do not frame it as “just believe harder in kids” without concrete strategies and supports; efficacy grows from mastery experiences, not from cheerleading alone.

 

  • Do not use CTE language to blame teachers (“If you had higher expectations, scores would be fine”); this confuses accountability with efficacy and damages trust.

 

  • Do not set broad, fuzzy goals (e.g., “raise achievement”) that are not tied to specific outcomes, content, and time frames.

 

  • Do not let every PLC chase a different priority with different measures.

 

  • Do not use data primarily for ranking, public comparison, or naming “good” vs. “bad” teachers.

 

  • Do not skip the “why” conversation—jumping straight from data to pressure without collaborative inquiry (what did we try, for whom, under what conditions?).

 

  • Do not expect CTE to grow if teachers lack time, structures, or facilitation.

 

  • Do not allow PLCs to drift into logistics, venting, or resource-sharing only.

 

  • Do not introduce CTE with a kickoff PD and then move on to the next thing.

 

  • Do not treat some students as “unteachable” or outside the team’s sphere of influence. link

 

 

 

 

How-To Resources

ARTICLE


Link – ARTICLE (ASCD) The power of collective efficacy

 

Link – ARTICLE (ASCD) How collective efficacy develops

 

Link – ARTICLE (Harvard) What makes a good teacher?

 

Link – ARTICLE (ASCD) 3 actions for building a culture of collective efficacy

 

Link – ARTICLE (ICSE) How to improve Collective Teacher Efficacy

 

Link – ARTICLE (Edthena) 2 Protocols to drive effective school wide collaboration

 

Link – ARTICLE (ASCA) The importance of collective teacher efficacy

 

Link – ARTICLE (Literacy Effect) PLC How to’s and Video

 

Link – ARTICLE (Hattie) Collective Teacher Efficacy

 

Link – ARTICLE (All things PLC) Choosing Essential Standards

 

Link – ARTICLE (William & Mary) Collaborative professional reflection

 

Link – ARTICLE (Life Science Edu) Reflective practice in Education

 

Link – ARTICLE (Corwin) 5 steps of collective efficacy cycle

 

Link – ARTICLE (CoreCollaborative) Strengthening CTE

 

Link – ARTICLE (Corwin) Fostering CTE

 

Link – ARTICLE (Sarah) Stronger together

 

Link – ARTICLE (APsey) 3 keys to creating CTE

 

 

 

RESERCH / REPORT / GUIDE


Link – RESEARCH (ERIC) CTE and enabling conditions

 

Link – GUIDE (IES WWC) Class wide Function Intervention Teams

 

Link – GUIDE (Utah) Collective teacher efficacy

 

Link – GUIDE (Dufor) Learning by Doing: PLC

 

Link – GUIDE (Hanover Research Brief) PLC Best Practices

 

Link – GUIDE (Hanover Research Brief) Professional Learning

 

Link – GUIDE (Hanover Research Brief) Sustainable PLC’s

 

 

VIDEO


Link – VIDEO (Adobe) Community of Practice

 

Link – VIDEO (NIET) PLC Information

 

Link – VIDEO (YouTube) CTE #1 impact

 

 

PROGRAMS / CURRICULUM


  • PLC model – Link

 

 

  • Child Study teams or Student Support teams

 

  • Appreciative inquiry link

 

  • ATLAS – learning from student work link

 

  • Becoming One Community link

 

  • Changing Practice protocol link

 

  • Collaborative Assessment protocol link

 

  • Consultancy protocol link

 

  • Continuum dialogue link

 

  • Utilization of the High Impact Leadership (HIL) model for School Renewal.link

 

  • C3 Teams model link

 

  • Collaborative Teaching models link

 

  • Critical Friends Group (NSRF) link

 

  • Pre-Collaboration link

 

  • Post-Collaboration link

 

  • Data Driven Dialogue link

 

  • Future protocol link

 

  • Inquiry Circles link

 

  • School Memories link

 

 

  • Peeling the Onion link

 

 

  • Quinn’s 6 Questions link

 

  • Success Analysis link

 

  • 30 Minute protocols link

 

  • Instructional Rounds

 

  • Station teaching link

 

  • Parallel teaching link

 

  • The CLEAR process link

 

 

 

 

 

 

DIGITAL


  • Google workspace link

 

  • Microsoft Teams link

 

 

 

 

 

Link – WEBSITE (PLC) All Things PLC

 

Link – WEBSITE (Adaptive Schools) Improving meetings & collaboration

 

Link – WEBSITE (MI Dept. Educ) FAME – Formative assessment resources

 

Link – WEBSITE (U OF FL) Community of Practice Beginner Toolkit

 

Link – WEBSITE (I2L) PLC Issues & Solutions

 

Link – WEBSITE (NSRF) Protocol list

 

LINK – WEBSITE (I2L) Improving Effectiveness – PLC

 

LINK – WEBSITE (I2L) Sample Student Problem Solving Meeting Notes – PLC

 

LINK – WEBSITE (I2L) Sample Implementation Plan Notes for Student Problem Solving

 

 

 

 

 

 

 

 

References

Adams, C. M., & Forsyth, P. B. (2006). Proximate sources of collective teacher efficacy. Journal of Educational Administration, 44(6), 625–642.

 

Achor, S. (2010). The happiness advantage: The seven principles of positive psychology that fuel success and performance at work. Crown Business.

 

Anig, G. (2013). Beyond the education wars: Evidence that collaboration builds effective schools. Century Foundation Press.

 

Bandura (1986). Social foundations of thought and action. Englewood Cliffs. Link

 

Bandura (1993). Perceived self-efficacy in cognitive development and functioning. Educational Psychologist, 28(2), 117-148.

 

Bandura, A. (1997). Self-efficacy: The exercise of control. Freeman.

 

Center on PBIS (2016). Guide: Responding to students social & emotional needsLink

 

Cantrell, S., & Callaway, P. (2008). High and low implementers of content literacy instruction: Portraits of teacher efficacy. Teaching and Teacher Education, 24(7), 1739–1750.

 

Çogaltay & Karadag. (2017). The Effect of Collective Teacher Efficacy on Student Achievement. Book.

 

Çogaltay & Boz (2022). Influence of school leadership on collective teacher efficacy: a cross-cultural meta-analysis. Asia Pacific Education Review.

 

Deal, T., & Peterson, K. (1999). Shaping school culture: The heart of leadership. Jossey-Bass.

 

Donohoo, J. (2017). Collective teacher efficacy research: Implications for professional learning. Journal of Professional Capital and Community, 2(2), 101–116.

 

Dufor, R. (2015). In praise of American educators: And how they can be better. Solution Tree.

 

Dufour, R., Dufour, R., Eaker, R., Many, T., Mattos, M. (2016). Learning by doing: A handbook for professional learning communities at work. Solution Tree Press, Bloomington IN. Link

 

Dufour, R., & Marzano, R. (2011). Leaders of learning: How district, school, and classroom leaders improve student achievement. Solution Tree.

 

Duke, N., & Taylor, B. (2013). Handbook of effective literacy instruction: Research based practice K-8. Guilford Press.

 

Eells, R. (2011). Meta-analysis of the relationship between collective efficacy and student achievement. Unpublished doctoral dissertation. Loyola University of Chicago.

 

Elmore, R. (2010). “I used to think…and now I think…” Harvard Education Letter, 26(1), p. 7-8

 

Evans, R. (1996). The human side of school change: Reform, resistance, and the real-life problems of innovation. Jossey-Bass.

 

Fullan, M. (2014). The principal: Three keys to maximizing impact. Jossey-Bass.

 

Garmston, R., & Wellman, B. (2023). Adaptative schools. Thinking Collaborative.Link

 

Garmston, R. (2007). Results-oriented agendas transform meetings into valuable collaborative events. Journal of Staff Development, 28(2).

 

Garmston R., & Wellman B. (2023). The adaptive school: A sourcebook for developing collaborative groups. Rowan & Littlefield.

 

Gibbs, S., & Powell, B. (2011). Teacher efficacy and pupil behavior: The structure of teachers’ individual and collective beliefs and their relationship with numbers of pupils excluded from school. British Journal of Educational Psychology, 82(4), 564–584.

 

Goddard, R. (2001). Collective efficacy: A neglected construct in the study of schools and student achievement. Journal of Educational Psychology, 93(3), 467–476.

 

Goddard, R., Goddard, Y., Kim, E. S., & Miller, R. (2015). A theoretical and empirical analysis of the roles of instructional leadership, teacher collaboration, and collective efficacy beliefs in support of student learning. American Journal of Education, 121(4), 501–530. https://doi.org/10.1086/681925

 

Goodlad J.,  (1984). A place called School. McGraw Hill. Link

 

Hargreaves, A., & Fullan, M. (2012). Professional capital: Transforming teaching in every school. New York: Teachers’ College Press.

 

Hattie, J., Fisher, D., Frey, N., Almarode, J., Hansen, T. (2024) The illustrated guide to visible learning: An introduction to what works best in schools. Corwin Press.

 

Hattie, J. (2023). Visible learning: The sequel. Routledge Press, New York & London. Pages 71, 74. Link

 

IES WWC (2023) Class-Wide Function-Related Intervention Teams. Link

 

Klassen, R. (2010). Teacher stress: The mediating role of collective efficacy beliefs. The Journal of Educational Research, 103(5), 342–350.

 

Kotter, J. (2012). Leading change. Harvard Business School Press.

 

Lefstein, A. et.al (2020). Taking stock of research on teacher collaborative discourse: Theory and method in a nascent field. Teaching and Teacher Education, 88, 10294.

 

Lezotte, L. (2011). Effective schools: Past, present, and future. Journal of Effective Schools, 10(1).

 

Lipton, L., & Wellman, B (2022). Learning focused supervision. 2nd edition. MIRVA press.

 

Little, J.W. (1990). The persistence of privacy: Autonomy and initiative in teachers’ professional relations. Teachers College Record, 91(4), 509-536.

 

Marzano, R. (2003). What works in schools: Translating research into action. ASCD

 

McDermott, R. (1998). Learning across teams: The role of communities of practice in team organizationsLink

 

McDonald, J., et al. (2007). The power of protocols: An educators guide to better practice. Teachers College Press.

 

Meyers, C. V., & Smylie, M. A. (2017). Five myths of school turn-around policy and practice. Leadership and Policy in Schools, 16(3), 502–523. https://doi.org/10.1080/15700763.2016.1270333

 

Mintzberg, H. (1994). The rise and fall of strategic planning. NY: Free Press

 

Patterson, K., et al (2002). Crucial conversations: Tools for talking when stakes are high. McGraw-Hill

 

Perkins, D. (2003). King Arthur’s round table: How collaborative conversations create smart organizations. Wiley

 

Perplexity. (2024). *Perplexity.ai* (AI chatbot). https://www.perplexity.ai/

 

Ross, J. A., & Gray, P. (2006b). Transformational leadership and teacher commitment to organizational values: The mediating effects of collective teacher efficacy. School Effectiveness and School Improvement, 17(2), 179–199. https://doi.org/10.1080/09243450600565795

 

Sahlberg, P., Walker, T. (2021). In teachers we trust: The Finnish way to world-class schools. NY: W.W. Norton.

 

Tschannen-Moran, M., & Barr, M. (2004). Fostering student learning: The relationship of collective teacher efficacy and student achievement. Leadership and Policy in Schools, 3(3), 189–209.

 

Voelkel, R. H., & Chrispeels, J. H. (2017). Understanding the link between professional learning communities and teacher collective efficacy. School Effectiveness and School Improvement, 28(4),505–526. https://doi.org/10.1080/09243453.2017.1299015

 

Wenger, E. (2000). Community of practice and social learning systems. Organization, 7(2) Link

Collective Teacher Efficacy (Collaboration)

 

DEFINITIONS

Collective Efficacy: Is a shared belief and resulting team collaboration by a group of teachers, that they have the collective skills to positively impact student outcomes. It represents the collaborative process of teachers working in teams to plan, implement, and review instructional strategies, and student outcomes that facilitate learning.  It represents the “power of professional educators” working together to build capacity, improve practice, and boost learning.

Collective efficacy is a “groups shared confidence and belief in the conjoint capabilities to organize and execute the courses of action required to produce given levels of attainment. Hattie et.al, Illustrated Guide (2024, pg. 90).

 

Collaboration Requirements: Educational leaders need consistent support time  to meet;  up-front training in how to collaborate; a leadership shift that shares responsibility; a “safe” environment and learning culture that focuses on teacher improvement; a realization that all students belong to all teachers; and a space where relationships are so strong conversations and debate can be encouraged around tasks and ideas. Sahlberg (2021)

DATA

  • 7 Meta Analysis reviews

  • 205 Research studies

  • 35,000 Students in research studies

  • 3 Confidence level.  Hattie (2023) p. 217

 

 

QUOTES

“Individual teachers benefit from collaboration with peers when they share the belief that through united efforts they can overcome any challenges and produce intended results. Teachers need to exist in a culture that believes: we are evaluators; we are change agents; we use evidence-based practices; we collaborate.” Hattie (2023) p. 228.

 

 

We do not learn from experience…we learn from reflecting on experience. John Dewey

 

 

 

Cooperation: Is easy – share information if needed and make independent decisions.

Coordination: slightly harder – share goals and leverage resources but maintain independent responsibilities.

Collaboration: most difficult – need a framework for decision making, share responsibility for implementation, and work together evaluating the effects of decisions.Duke (2013) p. 511

 

Too many teachers cling to the principal of the “fresh start” and thus do not spend enough time learning about students in advance leading to more seamless transitions, and wasting time learning about their students. They should be taking advantage of past teacher knowledge and success. Elmore (2010)

 

 

It’s not rigid adherence to standards; it’s not purchasing new curriculum materials on a 5-year-cycle; it’s not curriculum alignment…all of these approaches have there place but they don’t influence student achievement much.  Instead, we need to invest in our teachers!  We need to break down the doors to classroom isolation. We need to spend many more hours weekly in collaborative teams discussing students find reviewing potential interventions, and we need to learn about and apply what works best: evidence-based practices. Create this environment for teachers and they and their students will flourish. We have been spending money on all the wrong things – spend it on teachers working collaboratively with a menu of evidence-based options.   Tompkins (2024) EBL

 

 

 

“No one finds time for collaboration…one makes time.” Dufor (2015) p. 133

 

 

Teachers need agency – they cannot be passive recipients of decision made by administration.  They need to collaborate in order to learn evidence-based instructional methods, agree on curriculum expectations, develop formative assessments, and create methods to enhance learning for all students. Lefstein (2020)

 

 

“Is not adjusting the curricula, tinkering with structural aspects, introducing new grouping or enrichment classes, worrying about resources or the deficits of parents, asking for more money, and building brilliant web pages…instead it is the promotion and development of building the collective community of adults in the school to positively impact student learning and outcomes.” Hattie (2023) p. 72

 

 

“Why change if it’s the student’s fault? The most powerful lever for changing professional practice is concrete evidence of irrefutably better results. The other lever for persuading teachers is the power of positive peer pressure.” Dufor (2015) p. 178

 

 

“Many educators settle for PLC lite; they may create a rubric for assessing the quality of student work but avoid the collaborative process of applying the rubric to actual evidence and then using this evidence to develop a response.  PLC groups need the transparent sharing of results…PLC lite teachers peak in generalities about students rather than focus on strategies of instruction.”  Dufor (2015) p. 186

 

 

Teachers are psychologically alone even though they are in a densely populated setting…they adapt being alone by creating a culture of individuals concerned about themself rather than a culture concerned about the group and the pursuit of best practices. There is a persistence of privacy with a culture of isolation, privacy, noninterference and unwillingness of teacher to work together to examine evidence of student learning…this creates a powerful force for maintaining the status quo. Goodlad (1984)

 

 

 

“Successful and sustainable improvement can therefore, never be done to teachers…it can only ever be achieved by and with them.” Dufor (2015) p. 66

 

 

“The only classroom rules that matter are the ones that are actually enforced. Students quickly realize when the rules are stated but not enforced.  Adult behavior is no different. In the absence of staff collective commitments and the willingness to hold each other accountable, schools struggle with building a collaborative culture because of personal conflict and adult drama.  Student learning suffers because the adults are unable to establish truly professional relationships.” Dufor (2015) p.113

 

 

I can do things you cannot. You can do things I cannot. Together we can do great things. Mother Theresa

 

 

“Successful and sustainable improvement can never be done to teachers…it can only be achieved by and with them.” Dufor (2015) p. 66

 

 

 

“Are we here to ensure students are taught, or are we here to ensure that our students learn? In too many schools educators cling to the belief that their job is provide students with the opportunity to learn, but the ultimate responsibility for success or failure falls on the students and parents. Some teachers say it is unfair to hold them accountable for student success. A learning focused culture understands that the school was not built to that teachers have a place to teach; it was built so that children have a place to learn.” Dufor (2015) p. 103

 

 

 

The most powerful form of accountability is peer-to-peer accountability; but the only way to develop this accountability is top-down. Leaders must be willing to address situations where people do not honor collective commitments. In high-trust schools, leaders are more (no less) likely to confront those who demonstrate a lack of commitment to the collective commitment. Dufor (2015) p. 241

 

 

 

“Moving from being a good school to becoming a great school requires examining the brutal facts. there is not something in the water at the best schools…what is different is they moved from viewing themselves as victims of their circumstances to masters of their own fate. They stopped focusing on what they could not control and instead took responsibility for what they could.”  Dufor (2015) p. 250

 

 

 

“Unfortunately, many (if not most PLC and MTSS meetings) do not produce the results that are possible. Too often teacher collaboration meetings “appear contrived, inauthentic, grafted on, perched precariously on the margins of real work…teachers prefer to talk about student problems, engage in storytelling, deflect discussion into curriculum, the attributes of students, resources, time and workload – rather than engage in discussions of instructional pedagogy.” Little (1990) p. 510

 

 

“Individual teachers working in isolation as they attempt to help all of their students achieve at high levels will eventually be overwhelmed by the tension between covering the content and responding to the students diverse needs in a fixed amount of time with virtually no external support.” Dufor (2016) p. 175

 

 

“Teachers in highest performing schools in the world (Singapore & Finland) devote 15-20 hours per week preparing and analyzing lessons, developing assessments, gathering evidence of student learning, analysis of evidence, and meeting with other teachers to plan interventions.” Dufor (2015) p. 78

 

 

 

“The National Center on Education and the Economy recommends that states require school districts ensure teachers spend 1/4 of their time collaborating with colleagues.”  Dufor (2015) p. 79

 

 

 

“At the highest levels of expert performance, the drive for improvement will always involve search and experimentation at the threshold of understanding, even for the masters dedicated to redefining the meaning of excellence in their fields.” Lipton & Wellman (2022) p. iii

 

 

 

Teachers who effectively collaborate on a regular basis in planning instruction, creating assessments, and defining interventions have demonstrated significantly improved student achievement rates. Teachers need to time to work together and training / skills in collaboration to achieve these outcomes.”Adams (2006) 

 

 

“Unless people believe they can produce the desired effects by their actions, they have little incentive to act, or to persevere in the face of difficulties. Whatever other factors serve as guides and motivators, they are rooted in the core belief that one has the power to effect changes by one’s actions.” Hattie e. al. (2024, pg. 91)

 

 

 

“Improvement in teaching is a collective rather than individual enterprise. Analysis, evaluation, and experimentation in concert with colleagues are conditions under which teachers improve.” Hattie, J. (2024, pg. 96)