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Curriculum glossary

39 terms from C10, Curriculum: intended, enacted and attained — each defined in the primer's own words. Every term the primer teaches links to the slide that teaches it.

The whole context glossary

C10 · Curriculum and assessment

Curriculum: intended, enacted and attained

“The curriculum is the syllabus document.”

Every term below is defined in the words of curriculum, primer C10 of understanding the context of education, and opens the primer at the slide where it is taught. 5 terms are also defined by another primer in the series; where the two differ, both wordings are given. The whole context glossary holds all of them together.

TermDefinitionReferred to inRead further
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21st Century Competencies framework (SG)

Singapore’s framework with core values at the centre, social-emotional competencies around them, and outer competencies in thinking, communication and collaboration, and civic, global and cross-cultural literacy (Ministry of Education, Singapore, n.d.).

  • Ministry of Education, Singapore. (n.d.). 21st century competencies. Retrieved September 18, 2026, from moe.gov.sg
  • Tan, J. P.-L., Koh, E., Chan, M., Costes-Onishi, P., & Hung, D. (2017). Advancing 21st century competencies in Singapore. Asia Society. asiasociety.org
A
Alignment

Agreement between what is wanted, what is taught and what is assessed. Biggs (1996) calls the designed version constructive alignment; Webb (1997) sets out criteria for judging it.

  • Webb, N. L. (1997). Criteria for alignment of expectations and assessments in mathematics and science education (Research Monograph No. 6). National Institute for Science Education. files.eric.ed.gov
  • Biggs, J. (1996). Enhancing teaching through constructive alignment. Higher Education, 32(3), 347–364. doi
  • Tyler, R. W. (1949). Basic principles of curriculum and instruction. University of Chicago Press.
Attained curriculum

What students come away able to do, usually evidenced by their work and by assessment. It is the level most systems measure and the one furthest from the document.

  • Bakan Kalaycioglu, D., Reynolds, K. A., Fishbein, B., Gonzalez, E., & von Davier, M. (2026). Intended, implemented, and attained mathematics and science curricula at the eighth grade: Findings from TIMSS 2023. Boston College, TIMSS & PIRLS International Study Center. doi
B
Backward design

Planning in three stages: identify desired results, determine acceptable evidence, then plan learning experiences and instruction (Wiggins & McTighe, 2005; McTighe & Wiggins, 2012).

  • Wiggins, G., & McTighe, J. (2005). Understanding by Design (2nd ed.). ASCD.
  • McTighe, J., & Wiggins, G. (2012). Understanding by Design framework [White paper]. ASCD. files.ascd.org
  • Tyler, R. W. (1949). Basic principles of curriculum and instruction. University of Chicago Press.
Big ideas

The concepts that organise a subject and that a unit is built to serve, rather than the topics a textbook happens to contain. In Understanding by Design they sit at the centre of stage one.

  • Wiggins, G., & McTighe, J. (2005). Understanding by Design (2nd ed.). ASCD.
  • McTighe, J., & Wiggins, G. (2012). Understanding by Design framework [White paper]. ASCD. files.ascd.org
  • Bruner, J. S. (1960). The process of education. Harvard University Press.
Bloom’s revised taxonomy

A taxonomy that crosses a knowledge dimension, factual, conceptual, procedural and metacognitive, with a process dimension running remember, understand, apply, analyse, evaluate and create (Anderson & Krathwohl, 2001).

  • Anderson, L. W., & Krathwohl, D. R. (Eds.). (2001). A taxonomy for learning, teaching, and assessing: A revision of Bloom’s taxonomy of educational objectives. Longman.
  • Krathwohl, D. R. (2002). A revision of Bloom’s taxonomy: An overview. Theory Into Practice, 41(4), 212–218. doi
  • Heer, R. (2012). A model of learning objectives based on A taxonomy for learning, teaching, and assessing. Center for Excellence in Learning and Teaching, Iowa State University. bu.edu
C
Competency-based curriculum

A curriculum organised around what students should be able to do with knowledge, values and attitudes in context. The OECD (2019) insists competency and knowledge are "neither competing nor mutually exclusive concepts".

  • OECD. (2019). OECD Learning Compass 2030 [Concept note, OECD Future of Education and Skills 2030]. oecd.org
  • Rotherham, A. J., & Willingham, D. (2009). 21st century skills: The challenges ahead. Educational Leadership, 67(1), 16–21. ascd.org
  • Tan, J. P.-L., Koh, E., Chan, M., Costes-Onishi, P., & Hung, D. (2017). Advancing 21st century competencies in Singapore. Asia Society. asiasociety.org
Constructive alignment

Biggs’s (1996) design principle: objectives state performances of understanding, and the teaching methods and assessment are then aligned to elicit exactly those performances.

  • Biggs, J. (1996). Enhancing teaching through constructive alignment. Higher Education, 32(3), 347–364. doi
  • Biggs, J., & Tang, C. (2011). Teaching for quality learning at university (4th ed.). Open University Press.
Content and performance standards

Content standards say what students should know; performance standards say how well they must do it to count as proficient. Systems that write only the first leave the demand to the test.

  • Webb, N. L. (1997). Criteria for alignment of expectations and assessments in mathematics and science education (Research Monograph No. 6). National Institute for Science Education. files.eric.ed.gov
  • Schmidt, W. H., & Houang, R. T. (2012). Curricular coherence and the Common Core State Standards for mathematics. Educational Researcher, 41(8), 294–308. doi
Coverage against depth

The standing trade-off between meeting many topics briefly and few topics thoroughly. It is a judgement about value, not a question this primer found settled by evidence.

  • OECD. (2020). Curriculum overload: A way forward. OECD Publishing. doi
  • Tan, J. P.-L., Koh, E., Chan, M., Costes-Onishi, P., & Hung, D. (2017). Advancing 21st century competencies in Singapore. Asia Society. asiasociety.org
  • Bakan Kalaycioglu, D., Reynolds, K. A., Fishbein, B., Gonzalez, E., & von Davier, M. (2026). Intended, implemented, and attained mathematics and science curricula at the eighth grade: Findings from TIMSS 2023. Boston College, TIMSS & PIRLS International Study Center. doi
Curriculum coherence

The degree to which content across topics, years and subjects follows the structure of a discipline and adds up, rather than repeating or jumping. Schmidt and Houang (2012) found states with standards closer to a coherent set scored higher on national tests.

  • Schmidt, W. H., & Houang, R. T. (2012). Curricular coherence and the Common Core State Standards for mathematics. Educational Researcher, 41(8), 294–308. doi
  • Schmidt, W. H., Wang, H. C., & McKnight, C. C. (2005). Curriculum coherence: An examination of US mathematics and science content standards from an international perspective. Journal of Curriculum Studies, 37(5), 525–559. doi
Curriculum development and review

How syllabuses are designed, consulted on, reviewed and renewed, and how they are enacted in schools. Primer C11 covers development, review cycles and enactment in full.

  • Ministry of Education, Singapore. (2025, September 23). Regular curriculum reviews and industry consultation to align students’ skills with future economy needs [Parliamentary reply]. moe.gov.sg
  • Stenhouse, L. (1975). An introduction to curriculum research and development. Heinemann.
  • Tyler, R. W. (1949). Basic principles of curriculum and instruction. University of Chicago Press.
Curriculum mapping

Recording what is actually taught, when and to what demand, so that gaps, repetitions and mismatches with assessment become visible. It is the practical tool for seeing the enacted curriculum.

C11 Setting out what is taught, where and when, across a programme or school. Covered in primer C10.

  • Webb, N. L. (1997). Criteria for alignment of expectations and assessments in mathematics and science education (Research Monograph No. 6). National Institute for Science Education. files.eric.ed.gov
  • Jacobs, H. H. (1997). Mapping the big picture: Integrating curriculum and assessment K–12. ASCD.
  • Porter, A. C. (2002). Measuring the content of instruction: Uses in research and practice. Educational Researcher, 31(7), 3–14. doi
Curriculum materials and textbooks

The resources that carry a curriculum into classrooms. Teachers interact with them rather than execute them (Remillard, 2005), and switching materials alone changed little in one large study (Blazar et al., 2020).

  • Remillard, J. T. (2005). Examining key concepts in research on teachers’ use of mathematics curricula. Review of Educational Research, 75(2), 211–246. doi
  • Blazar, D., Heller, B., Kane, T. J., Polikoff, M., Staiger, D. O., Carrell, S., Goldhaber, D., Harris, D. N., Hitch, R., Holden, K. L., & Kurlaender, M. (2020). Curriculum reform in the Common Core era: Evaluating elementary math textbooks across six U.S. states. Journal of Policy Analysis and Management, 39(4), 966–1019. doi
Curriculum overload

More content and more demands than the available time can hold. The OECD (2020) describes constant pressure to add new literacies and competencies, and asks how to avoid a "mile wide – inch deep" curriculum.

  • OECD. (2020). Curriculum overload: A way forward. OECD Publishing. doi
  • Schmidt, W. H., McKnight, C. C., & Raizen, S. A. (1997). A splintered vision: An investigation of U.S. science and mathematics education. Kluwer Academic Publishers.
D
Depth of Knowledge

Webb’s four levels of what a task requires: recall, skill or concept, strategic thinking and extended thinking. The level is a property of the task, not of the student’s ability (Webb, 1997, 2002).

  • Webb, N. L. (1997). Criteria for alignment of expectations and assessments in mathematics and science education (Research Monograph No. 6). National Institute for Science Education. files.eric.ed.gov
  • Webb, N. L. (2002). Depth-of-knowledge levels for four content areas [Unpublished paper]. Wisconsin Center for Education Research.
  • University of Florida. (n.d.). Difficulty and cognitive complexity [Assessment module 3e]. Office of Institutional Assessment. Retrieved September 18, 2026, from assessment.aa.ufl.edu
E
Enacted curriculum

What is actually taught: the topics given time, the examples chosen, the demand set. TIMSS calls it the implemented curriculum, "the actual instructional practices and learning experiences that occur within the classroom".

  • Bakan Kalaycioglu, D., Reynolds, K. A., Fishbein, B., Gonzalez, E., & von Davier, M. (2026). Intended, implemented, and attained mathematics and science curricula at the eighth grade: Findings from TIMSS 2023. Boston College, TIMSS & PIRLS International Study Center. doi
  • Remillard, J. T. (2005). Examining key concepts in research on teachers’ use of mathematics curricula. Review of Educational Research, 75(2), 211–246. doi
  • Stenhouse, L. (1975). An introduction to curriculum research and development. Heinemann.
Enduring understandings

Statements of what students should still grasp long after the details are forgotten. They are written as full sentences, because an abstract noun hides the claim.

  • Wiggins, G., & McTighe, J. (2005). Understanding by Design (2nd ed.). ASCD.
  • McTighe, J., & Wiggins, G. (2012). Understanding by Design framework [White paper]. ASCD. files.ascd.org
Essential questions

Open questions that frame a unit and keep returning, chosen to provoke inquiry into the big ideas rather than to be answered once.

  • Wiggins, G., & McTighe, J. (2005). Understanding by Design (2nd ed.). ASCD.
  • McTighe, J., & Wiggins, G. (2012). Understanding by Design framework [White paper]. ASCD. files.ascd.org
H
Hidden curriculum

What students learn from how school is organised rather than from what is taught: rules, rankings, routines, whose questions get answered. The term is credited to Jackson (1968); Anyon (1980) showed it differing by social class.

C01 What students learn from how schooling is organised, rather than from what is formally taught: rules, rankings, routines and who is listened to. It is one reason socialisation happens even when no one plans it.

  • Biesta, G. (2009). Good education in an age of measurement: On the need to reconnect with the question of purpose in education. Educational Assessment, Evaluation and Accountability, 21(1), 33–46. doi
  • Jackson, P. W. (1968). Life in classrooms. Holt, Rinehart and Winston.
  • Anyon, J. (1980). Social class and the hidden curriculum of work. Journal of Education, 162(1), 67–92. doi
I
Intended curriculum

What official documents ask for: goals, standards and syllabuses set by national or regional authorities (Bakan Kalaycioglu et al., 2026).

  • Bakan Kalaycioglu, D., Reynolds, K. A., Fishbein, B., Gonzalez, E., & von Davier, M. (2026). Intended, implemented, and attained mathematics and science curricula at the eighth grade: Findings from TIMSS 2023. Boston College, TIMSS & PIRLS International Study Center. doi
  • Goodlad, J. I., & Associates. (1979). Curriculum inquiry: The study of curriculum practice. McGraw-Hill.
Interdisciplinary and transdisciplinary learning

Interdisciplinary work brings two or more subjects to bear on a question while keeping their methods distinct; transdisciplinary work starts from a real problem and draws on whatever the problem needs. Both raise the question of where disciplinary rigour is maintained.

  • Young, M. (2013). Overcoming the crisis in curriculum theory: A knowledge-based approach. Journal of Curriculum Studies, 45(2), 101–118. doi
  • Klein, J. T. (1990). Interdisciplinarity: History, theory, and practice. Wayne State University Press. doi
K
Knowledge-rich curriculum

A curriculum that specifies substantive content in detail and treats knowledge as the thing to be taught, on the argument that skills depend on what one knows.

  • Young, M. (2013). Overcoming the crisis in curriculum theory: A knowledge-based approach. Journal of Curriculum Studies, 45(2), 101–118. doi
  • Young, M. (2008). Bringing knowledge back in: From social constructivism to social realism in the sociology of education. Routledge. doi
  • Rotherham, A. J., & Willingham, D. (2009). 21st century skills: The challenges ahead. Educational Leadership, 67(1), 16–21. ascd.org
L
Learning objectives

Statements of what teaching intends students to learn, usually written for a lesson or unit and phrased as what students will know or be able to do.

  • Tyler, R. W. (1949). Basic principles of curriculum and instruction. University of Chicago Press.
  • Anderson, L. W., & Krathwohl, D. R. (Eds.). (2001). A taxonomy for learning, teaching, and assessing: A revision of Bloom’s taxonomy of educational objectives. Longman.
  • Krathwohl, D. R. (2002). A revision of Bloom’s taxonomy: An overview. Theory Into Practice, 41(4), 212–218. doi
Learning outcomes

Statements of what a student should be able to demonstrate at the end of a course, unit or key stage. Outcomes face the assessment; objectives face the teaching.

  • Biggs, J. B., & Collis, K. F. (1982). Evaluating the quality of learning: The SOLO taxonomy (structure of the observed learning outcome). Academic Press.
  • Biggs, J. (1996). Enhancing teaching through constructive alignment. Higher Education, 32(3), 347–364. doi
  • Korkmaz, F., & Ünsal, S. (2017). Analysis of attainments and evaluation questions in sociology curriculum according to the SOLO taxonomy. Eurasian Journal of Educational Research, 69, 75–92. doi
Learning progressions

"Descriptions of the successively more sophisticated ways of thinking about a topic that can follow one another as children learn about and investigate a topic over a broad span of time (e.g., 6 to 8 years)" (National Research Council, 2007). Corcoran et al. (2009) treat them as testable hypotheses.

C13 Research-based descriptions of the order in which understanding of a topic typically develops, used to place a learner and choose the next step. Primer C10 covers them.

  • National Research Council. (2007). Taking science to school: Learning and teaching science in grades K–8. National Academies Press. doi
  • Corcoran, T., Mosher, F. A., & Rogat, A. (2009). Learning progressions in science: An evidence-based approach to reform (CPRE Research Report No. RR-63). Consortium for Policy Research in Education. files.eric.ed.gov
Learning trajectories

The mathematics education term for the same idea: a goal, a developmental path children take towards it, and activities matched to each level on that path (Clements & Sarama, 2004).

  • Clements, D. H., & Sarama, J. (2004). Learning trajectories in mathematics education. Mathematical Thinking and Learning, 6(2), 81–89. doi
  • Simon, M. A. (1995). Reconstructing mathematics pedagogy from a constructivist perspective. Journal for Research in Mathematics Education, 26(2), 114–145. doi
Levels of curriculum (Goodlad)

Goodlad’s finer set of five levels on which a curriculum occurs: the ideological, formal, perceived, operational and experiential. The perceived level is what teachers and parents believe the curriculum requires (Goodlad & Associates, 1979).

  • Goodlad, J. I., & Associates. (1979). Curriculum inquiry: The study of curriculum practice. McGraw-Hill.
  • Ramulumo, M., & Mnguni, L. (2023). A qualitative comparison of the intended curriculum ideologies of STEM subjects in South Africa. Curriculum Perspectives, 43(2), 145–155. doi
M
Marzano’s New Taxonomy

A taxonomy of three systems, self, metacognitive and cognitive, acting on three knowledge domains: information, mental procedures and psychomotor procedures. It captures motivation and self-regulation that the others leave out (Marzano & Kendall, 2007).

  • Marzano, R. J., & Kendall, J. S. (2007). The new taxonomy of educational objectives (2nd ed.). Corwin Press.
  • Irvine, J. (2020). Marzano’s new taxonomy as a framework for investigating student affect. Journal of Instructional Pedagogies, 24. files.eric.ed.gov
N
Null curriculum

Eisner’s term for what schools never offer, and so never invite students to consider (Eisner, 1985, as cited in Flinders et al., 1986).

  • Eisner, E. W. (1985). The educational imagination: On the design and evaluation of school programs (2nd ed.). Macmillan.
  • Flinders, D. J., Noddings, N., & Thornton, S. J. (1986). The null curriculum: Its theoretical basis and practical implications. Curriculum Inquiry, 16(1), 33–42. doi
P
Powerful knowledge

Specialised, discipline-based knowledge that gives those who have it capacities they would not otherwise get, and which most students can reach only through school (Young, 2008, 2013; Young & Muller, 2013). Young contrasts it with "knowledge of the powerful", which asks only who wrote the curriculum.

C01 Specialised, discipline-based knowledge that gives access to ideas students are unlikely to meet outside school (Young & Muller, 2013).

  • Young, M., & Muller, J. (2013). On the powers of powerful knowledge. Review of Education, 1(3), 229–250. doi
  • Young, M. (2008). Bringing knowledge back in: From social constructivism to social realism in the sociology of education. Routledge. doi
  • Muller, J., & Young, M. (2019). Knowledge, power and powerful knowledge re-visited. The Curriculum Journal, 30(2), 196–214. doi
S
Scope and sequence

The list of what is covered and the order it is covered in, across a year or a phase. It answers when, not how understanding develops.

  • Tyler, R. W. (1949). Basic principles of curriculum and instruction. University of Chicago Press.
  • Corcoran, T., Mosher, F. A., & Rogat, A. (2009). Learning progressions in science: An evidence-based approach to reform (CPRE Research Report No. RR-63). Consortium for Policy Research in Education. files.eric.ed.gov
SOLO taxonomy

A taxonomy that classifies the structure of a response rather than the verb in the objective, running pre-structural, uni-structural, multi-structural, relational and extended abstract (Biggs & Collis, 1982).

  • Biggs, J. B., & Collis, K. F. (1982). Evaluating the quality of learning: The SOLO taxonomy (structure of the observed learning outcome). Academic Press.
  • Korkmaz, F., & Ünsal, S. (2017). Analysis of attainments and evaluation questions in sociology curriculum according to the SOLO taxonomy. Eurasian Journal of Educational Research, 69, 75–92. doi
Spiral curriculum

A design in which the same big ideas are revisited at successive levels with increasing depth, after Bruner (1960). Singapore’s primary science syllabus states one explicitly (Ministry of Education, Singapore, 2022).

  • Bruner, J. S. (1960). The process of education. Harvard University Press.
  • Smith, M. K. (2002). Jerome S. Bruner and the process of education. The encyclopedia of pedagogy and informal education. Retrieved September 18, 2026, from infed.org
  • Ministry of Education, Singapore. (2022). Science teaching and learning syllabus: Primary three to six (Updated January 2026). Curriculum Planning and Development Division. moe.gov.sg
Success criteria

What counts as having done it well, shared with students so they can judge their own work. Primer C13 covers success criteria and feedback in depth.

C13 What a good piece of this work would contain or show, stated so that a student can check their own draft against it. Distinct from instructions, which say what to do.

  • Wiggins, G., & McTighe, J. (2005). Understanding by Design (2nd ed.). ASCD.
  • Wiliam, D., & Thompson, M. (2008). Integrating assessment with learning: What will it take to make it work? In C. A. Dwyer (Ed.), The future of assessment: Shaping teaching and learning (pp. 53–82). Lawrence Erlbaum Associates. doi
  • Sadler, D. R. (1989). Formative assessment and the design of instructional systems. Instructional Science, 18(2), 119–144. doi
Syllabus

The document for a subject and level: aims, content, sometimes suggested approaches and assessment. It is the most visible part of the intended curriculum, not the whole of it.

  • Stenhouse, L. (1975). An introduction to curriculum research and development. Heinemann.
  • Smith, M. K. (2000). What is curriculum? Exploring theory and practice. The encyclopedia of pedagogy and informal education. (Original work published 1996). Retrieved September 18, 2026, from infed.org
  • Ministry of Education, Singapore. (2022). Science teaching and learning syllabus: Primary three to six (Updated January 2026). Curriculum Planning and Development Division. moe.gov.sg
T
Teach Less, Learn More (SG)

Singapore’s 2005 initiative, following Lee Hsien Loong’s 2004 National Day Rally line "We’ve got to teach less to our students so that they will learn more", which trimmed content to make room for deeper learning (Lee, 2004; Tan et al., 2017).

  • Lee, H. L. (2004, August 22). National Day Rally 2004 [Speech]. Prime Minister’s Office Singapore. pmo.gov.sg
  • Tan, J. P.-L., Koh, E., Chan, M., Costes-Onishi, P., & Hung, D. (2017). Advancing 21st century competencies in Singapore. Asia Society. asiasociety.org
Threshold concepts

Ideas that act "akin to a portal, opening up a new and previously inaccessible way of thinking about something": typically transformative, irreversible, integrative, bounded and troublesome (Meyer & Land, 2003, 2005).

  • Meyer, J. H. F., & Land, R. (2003). Threshold concepts and troublesome knowledge: Linkages to ways of thinking and practising within the disciplines (ETL Project Occasional Report No. 4). University of Edinburgh.
  • Meyer, J. H. F., & Land, R. (2005). Threshold concepts and troublesome knowledge (2): Epistemological considerations and a conceptual framework for teaching and learning. Higher Education, 49(3), 373–388. doi
Tyler’s four questions

Four questions behind curriculum design: what purposes a school should seek, what experiences are likely to attain them, how to organise those experiences, and how to determine whether the purposes are attained (Tyler, 1949).

  • Tyler, R. W. (1949). Basic principles of curriculum and instruction. University of Chicago Press.
  • Smith, M. K. (2000). What is curriculum? Exploring theory and practice. The encyclopedia of pedagogy and informal education. (Original work published 1996). Retrieved September 18, 2026, from infed.org
Singapore