Research Article
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Teachers’ Curriculum Fidelity: Analyzing How Teachers Implement and Adapt the Curriculum

Year 2026, Volume: 7 Issue: 1, 61 - 84, 29.12.2025
https://doi.org/10.63612/ijesp.1776104

Abstract

The study aims to analyze teachers’ opinions about the fidelity of their curriculum by investigating their curriculum implementation and adaptation practices, as well as the factors that affect their fidelity. The study employed a sequential explanatory mixed-methods design. In the first phase, quantitative data were collected using a scale to determine teachers’ general fidelity levels. In the second phase, qualitative data were gathered through semi-structured interviews with 19 teachers selected using maximum variation sampling, who worked at different school levels in a district of a city located in the Aegean region of Türkiye, during the spring semester of the 2021-2022 academic year. For qualitative data analysis, both descriptive and content analysis were used. The research findings showed that teachers partially adhere to the curriculum. Teachers pay attention to student readiness during the implementation of learning goals, content, and the teaching and learning process. Teachers make several adaptations during the implementation, such as adding higher-level goals, simplifying, handling the content according to the centralized exam, or changing the grading criteria. It was also indicated that teachers’ fidelity is affected by a variety of factors, including the COVID-19 pandemic, school context, teacher characteristics, student characteristics, curriculum, school administration, and parental involvement. Based upon the results of the study, it is suggested that teachers should be provided with more flexibility during the implementation process for several reasons, such as student readiness and school context.

Ethical Statement

The ethics application for the study was made on 12/10/2021 and the research was carried out with the approval of Uşak University Ethics Commission dated 07/10/2021 and numbered E-89784354-050.99-42558.

References

  • Alver, M., & Sancak, Ş. (2016). The views of teachers, instructors and prospective teachers on the 2015 program of the course of Turkish teaching. Turkish Studies, 11(14), 31-60.
  • Arslan Çelik, F. M. (2020). An investigation of secondary school English teachers' curriculum fidelity (Unpublished master’s thesis). Hacettepe University.
  • Aslan, M., & Erden, R. Z. (2020). Investigation of secondary school teachers' curriculum fidelity. Yüzüncü Yıl University Journal of Education Faculty, 17(1), 175-199.
  • Azano, A., Missett, T. C., Callahanl, C. M., Oh, S., Brunner, M., Foster, L. H. & Moon, T. R. (2011). Exploring the relationship between fidelity of implementation and academic achievement in a third-grade gifted curriculum: A mixed-methods study. Journal of Advanced Academics, 22(5), 693–719.
  • Bal, P., Karabay, A., & Kayıran, B. K. (2021). Analysis of elementary school teachers’ evaluations regarding the mathematics curriculum. Trakya Journal of Education, 11(2), 717-731.
  • Baş, G., & Şentürk, C. (2019). Teaching-learning conceptions and curriculum fidelity: A relational research. International Journal of Curriculum and Instruction, 11(2), 163- 180.
  • Bay, E., Kahramanoğlu R., Doş, B., & Turan Özpolat, E. (2017). Analysis of factors affecting curriculum fıdelity. Mehmet Akif Ersoy University Journal of Education Faculty, 43, 110-137.
  • Ben-Peretz, M. (1990). The teacher-curriculum encounter: Freeing teachers from the tyranny of texts. State University of New York Press.
  • Bruner, J. S. (1966). Toward a theory of instruction. Harvard University Press.
  • Burns, B. A. (2016). A case study: Teacher change during the implementation of the common core state standards for secondary mathematics (Unpublished Ph.D dissertation). Cardinal Stritch University, USA.
  • Burul, C. (2018). Investigation of the relationships between curriculum design approach preferences of teachers and their curriculum fidelity (Unpublished master’s thesis). Balıkesir University.
  • Bümen, N. T., Çakar, E., & Yıldız, D. G. (2014). Curriculum fidelity and factors affecting fidelity in the Turkish context. Educational Sciences: Theory & Practice, 14(1), 203-228.
  • Carroll, C., Patterson, M., Wood, S., Booth, A., Rick, J. & Balain, S. (2007). A conceptual framework for implementation fidelity. Implementation Science, 2, 1-9.
  • Clayback, K. A., Williford, A. P., & Vitiello, V. E. (2023). Identifying teacher beliefs and experiences associated with curriculum implementation fidelity in early childhood education. Prevention Science, 24(1), 27-38.
  • Cohen, L., Manion, L. & Morrison, K. (2011). Research methods in education (7th Ed.). Routledge.
  • Crato, N. (2021). Improving a country’s education: PISA 2018 results in 10 countries. Springer Nature. ProQuest Ebook Central, http://ebookcentral.proquest.com/lib/usak-ebooks/detail.action?docID=6407583
  • Creswell, J. W., & Plano Clark, V. L. (2018). Designing and conducting mixed methods research. SAGE Publications.
  • Çeliker-Ercan, G., & Çubukçu, Z. (2023). Curriculum implementation approaches of secondary school English teachers: A case study. Kastamonu Education Journal, 31(3), 347-366.
  • Dane, A. V., & Schneider, B. H. (1998). Program integrity in primary and early secondary prevention: Are implementation effects out of control?. Clinical Psychology Review, 18, 23-45.
  • Debarger, A. H., Penuel, W. R., Moorthy, S., Beauvineau, Y., Kennedy, C. A., & Boscardin, C. K. (2017). Investigating purposeful science curriculum adaptation as a strategy to improve teaching and learning. Science Education, 101(1), 66-98.
  • Denscombe, M. (2007). The good research guide. For small scale social research project. McGraw Hill. Dikbayır, A., & Bümen, N. T. (2016). An investigation of ninth grade mathematics curriculum fidelity. International Journal of Curriculum and Instructional Studies (IJOCIS), 6(11), 17-38.
  • Doğuş, F., & Tabak, S. (2024). Kırsalda ve kent merkezinde görev yapan ortaokul öğretmenlerinin öğretim programına bağlılıkları: Bir durum çalışması. Ordu Üniversitesi Sosyal Bilimler Araştırmaları Dergisi, 14(3), 958-986.
  • Drake, C., & Sherin, M. G. (2006). Practicing change: Curriculum adaptation and teacher narrative in the context of mathematics education reform. Curriculum Inquiry, 36(2), 153-187.
  • Durlak, J. A. (2016) Programme implementation in social and emotional learning: basic issues and research findings. Cambridge Journal of Education, 46, 333-345.
  • Dusenbury, L., Brannigan, R., Falco, M. & Hansen, W. B. (2003). A review of research on fidelity of implementation: Implications for drug abuse prevention in school settings. Health Education Research, 18 (2), 237-256.
  • Fullan, M., & Pomfret, A. (1977). Research on curriculum and instruction implementation. Review of Educational Research, 47(2), 335-397.
  • Glatthorn, A. A., Boschee, F., Whitehead, B. M., & Boschee, B. F. (2018). Curriculum leadership: Strategies for development and implementation. SAGE publications.
  • Gürbüz, C. (2020). Analysis of the levels of commitment of music teachers to the music lesson teaching program (Unpublished master’s thesis). Gaziantep University.
  • Hasson, H. (2010). Systematic evaluation of implementation fidelity of complex interventions in health and social care. Implementation Science, 5(67), 1-9.
  • Iskandar, I. (2020). Teachers’ fidelity to curriculum: an insight from teachers’ implementation of the Indonesian EFL curriculum policy. International Journal of Humanities and Innovation (IJHI), 3(2), 50-55.
  • Johnson, M. (2019). Teaching: going beyond the script (Unpublished Doctoral Dissertation). Minot State University, USA.
  • Kabaş, I. (2020). Primary school teachers' perceptions of self-efficacy on first literacy teaching and their commitment to the programme of first literacy teaching (Unpublished master’s thesis). Bolu Abant Izzet Baysal University.
  • Karabacak, E., & Kürüm-Yapıcıoğlu, D. (2020). The alignment between the official curriculum and the taught curriculum: An analysis of primary school English curriculum. International Journal of Contemporary Educational Research, 7(2), 165-186.
  • Karadağ Çaydaşi, S. (2019). Classroom teachers' views on value teaching and evaluation of their commitment to curriculum (Unpublished master’s thesis). Kafkas University.
  • Karakuyu, A. (2023). The contribution of teachers’ curriculum literacy on their curriculum fidelity: Curriculum literacy-curriculum fidelity. International Journal of Curriculum and Instruction, 15(3), 1785-1800.
  • Karataş, F., Eriçok, B., & Tanrikulu, L. (2025). Reshaping curriculum adaptation in the age of intelligence: Mapping teachers' AI‐driven curriculum adaptation patterns. British Educational Research Journal, 51(1), 154-180.
  • Kızıltan, Ö., & İnanç, H. B. (2024). Teachers’ opinions on the secondary school philosophy course curriculum (for 10th grade): The example of Afyonkarahisar province. ODU Journal of Social Sciences, 14(2), 508-524.
  • Korucu, M., & Şahan, H. H. (2024). The relationship between teachers' lifelong learning tendencies and their curriculum fidelity levels. Educational Policy Analysis and Strategic Research, 19(1), 66-89.
  • LaChausse, R. G., Clark, K. R. & Chapple, S. (2014). Beyond teacher training: The critical role of professional development in maintaining curriculum fidelity. Journal of Adolescent Health, 54(3), 53-58.
  • Marshall, S. M. (2015). The identification of contextual factors influencing teacher implementation of interventions related to students' individual education plans (Unpublished Ph.D dissertation). University of Rhode Island, USA.
  • Merriam, S. B. (2009). Qualitative research: A guide to design and implementation. John Wiley & Sons. Mihalic, S. (2004). The importance of implementation fidelity. Emotional & Behavioral Disorders in Youth, 4, 83-105.
  • Miles, M. B., & Huberman, A. M. (1994). Qualitative data analysis. Sage Publications.
  • Ministry of National Education [MoNE] (2012). 12 yıl zorunlu eğitim sorular ve yanıtlar [12 year compulsory education questions- answers]. https://www.meb.gov.tr/duyurular/duyurular20 12/12yil_soru_cevaplar.pdf
  • Ministry of National Education [MoNE] (2018). Öğretim programları [Educational curriculum]. Ankara.
  • Morgan, C., & Xu, G. R. (2011, July). Reconceptualising ‘obstacles’ to teacher implementation of curriculum reform: Beyond beliefs. In Mathematics Education and Contemporary Theory Conference. http://www. esri. mmu. ac. uk/mect/papers_11/Morgan.pdf
  • Mourshed, M., Chijioke, C., & Barber, M. (2010). How the world’s most improved school systems keep getting better. McKinsey & Company.
  • Nalbantoğlu, Ü. Y., & Bümen, N. T. (2024). Changes in the curriculum adaptation skills of teachers as a result of professional development support: A Turkish case study. Teaching and Teacher Education, 137, 104386.
  • Nevenglosky, E. (2018). Barriers to effective curriculum implementation (Unpublished Ph.D dissertation). Walden University, USA.
  • Nyaema, M. K. (2016). Exploring science and mathematics teachers' fidelity of implementation of project lead the way curriculum: A case study on how teachers' knowledge and beliefs influence their enactment of the curriculum (Unpublished Ph.D. dissertation). University of Iowa, USA.
  • Oliva, P. F. (2013). Developing the curriculum. Pearson.
  • Orhan, A., & Acar, F. E. (2018). Null curriculum and its reflections in Turkey. Journal of Theory and Practice in Education, 14(3), 292-305.
  • Ornstein, A.C., & Hunkins, F.P (2018). Curriculum: Foundations, principles, and issues. Pearson.
  • Öner Sunkur, M., & Yılmaz, F. (2025). Prediction of elementary school teachers' curriculum fidelity by demographic variables and curriculum literacy. Athens Journal of Education, 12(2), 321-339.
  • Palinkas, L.A., Horwitz, S.M., Green, C.A., Wisdom, J. P., Duan, N., & Hoagwood, K. (2015). Purposeful sampling for qualitative data collection and analysis in mixed method implementation research. Adm Policy Mental Health, 42(5), 533–544.
  • Pence, K. L., Justice, L. M., & Wiggins, A. K. (2008). Preschool teachers' fidelity in implementing a comprehensive language-rich curriculum. Language, Speech, and Hearing Services in Schools, 39(3), 329-341.
  • Piasta, S. B., Justice, L. M., McGinty, A., Mashburn, A., & Slocum, L. (2015). A comprehensive examination of preschool teachers’ implementation fidelity when using a supplemental language and literacy curriculum. Child & Youth Care Forum, 44, 731-755.
  • Piaget, J. (1970). Science of education and the psychology of the child. Orion Press. Posner, G. J. (2004). Analyzing the curriculum. McGraw-Hill.
  • Sharma, S. (2024). Enhancing inclusive learning environments: Strategies for curriculum adaptation and modification. In S. Verma & L. Tripathi (Eds.), Future of special education in India, (pp. 109-122). Red’Mac International Press.
  • Shulman, L. S. (1986). Those who understand: Kowledge growth in teaching. Educational Researcher, 15(2), 4-14.
  • Smith, K., & Strahine, B. (2016). Impact of fidelity of responsive classroom implementation on students' perceptions of student-teacher relationships and overall school climate (Unpublished Ph.D dissertation), Lipscomb University, USA.
  • Snyder, J., Bolin, F. & Zumwalt, K. (1992). Curriculum implementation. In P.W. Jackson (Ed.), Handbook of research on curriculum, (pp. 402–435). Macmillan.
  • Süer, S., & Kınay, I. (2022). Investigation of primary teachers' curriculum fidelity. International Journal of Curriculum and Instructional Studies, 12(1), 191-214.
  • Taş, M. A. (2022). An investigation of curriculum adaptation efforts of teachers working in disadvantaged secondary schools. Pegem Journal of Education and Instruction, 12(1), 10-24.
  • Tedesco, J. C., Opertti, R., & Amadio, M. (2014). The curriculum debate: Why it is important today. Prospects, 44(4), 527-546.
  • Thierry, K. L., Vincent, R. L., & Norris, K. (2022). Teacher-level predictors of the fidelity of implementation of a social-emotional learning curriculum. Early Education and Development, 33(1), 92-106.
  • Tomlinson, C. A. (2014). The differentiated classroom: Responding to the needs of all learners. ASCD. Van, L. H., Quoc, N. L. (2022). A systematic review of constructivist classrooms: Challenges for teachers and recommendations. Journal of Positive School Psychology, 6(8), 7216-7229.
  • Vygotsky, L. S. (1978). Mind in society: The development of higher psychological processes. Harvard University Press.
  • Wang, D. (2011). The dilemma of time: Student-centered teaching in the rural classroom in China. Teaching and Teacher Education, 27(1), 157-164.
  • Yang, Y. (2023Ya). Assessing alignment between curriculum standards and teachers’ instructional practices in China’s school music education. Research Studies in Music Education, 45(1), 56-76.
  • Yaşaroğlu, C., & Manav, F. (2015). Curriculum fıdelity scale: The study of validity & reliability. The Journal of International Education Science, 2(4), 247-258.
  • Yazıcılar, U., & Bümen N. T. (16-18 April, 2015). A theoretical analysis of teachers’ adaptation process of teaching curricula. Paper presented at 24th National Educational Sciences Congress, Niğde.
  • Yazıcılar, U. (2016). Investigation of the teachers' adaptation process of the mathematics curricula (Unpublished master’s thesis). Izmir, Ege University.
  • Yeung, S. S. Y., Lam, J. T., Leung, A. W., & Lo, Y. C. (2012). Curriculum change and innovation. Hong Kong University Press.
  • Yıldırım, A., & Şimşek, H. (2016). Qualitative research methods in social sciences. Seçkin Press.
  • Yılmaz, G. (2021). Examining the relationship between curriculum literacy levels, curriculum orientations and curriculum fidelity levels of teachers (Unpublished master’s thesis). Gaziantep University.
There are 75 citations in total.

Details

Primary Language English
Subjects Curriculum and Instration (Other)
Journal Section Research Article
Authors

Fatma Özüdoğru 0000-0001-5575-7738

Gülten Sakallıoğlu 0000-0001-7896-094X

Submission Date September 1, 2025
Acceptance Date December 16, 2025
Publication Date December 29, 2025
Published in Issue Year 2026 Volume: 7 Issue: 1

Cite

APA Özüdoğru, F., & Sakallıoğlu, G. (2025). Teachers’ Curriculum Fidelity: Analyzing How Teachers Implement and Adapt the Curriculum. International Journal of Educational Studies and Policy, 7(1), 61-84. https://doi.org/10.63612/ijesp.1776104

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