Taxonomy

The official scheme for naming and organizing curriculum content. This is the backbone; do not invent new IDs. If a concept does not fit here, propose a change to this document rather than working around it.

The traceability chain

Vision → Pillar → Domain → Strand → Standard/Objective → Unit → Lesson

Levels and their IDs

Pillars — P1–P4

The four dimensions of a whole person (see vision.md).

Domains — D01–D10

Broad content areas, each anchored to a primary pillar (a domain may also serve others).

Strands — Dxx.Sn

A strand is a persistent thread within a domain that runs vertically across grades (the mechanism of the spiral). Each domain defines its own strands; strand lists are declared in the domain file under curriculum/standards/domains/.

Example: D01.S1 = Domain 1, Strand 1 (“Emotional Literacy”).

Standards / Objectives — Dxx.Sn.<grade>.<n>

A standard is a grade-level objective: one measurable thing a student should be able to know or do at a specific grade.

• <grade> is K for Kindergarten, or 01–12 for Grades 1–12.
• <n> is a zero-padded sequence number within that strand and grade.

Example: D01.S1.K.01 = Domain 1, Strand 1, Kindergarten, objective 1.

Units — U.gg.nnn

A unit is a coherent, multi-lesson block (roughly 2–6 weeks).

• gg is the grade, zero-padded (00 = Kindergarten, 01–12).
• nnn is the unit number within the grade, zero-padded, ordered by sequence.

Example: U.00.001 = Kindergarten, unit 1.

Lessons — L.gg.nnn.nn

A lesson is one day of instruction (~45–60 minutes).

• gg.nnn is the owning unit.
• final nn is the lesson number within the unit, zero-padded.

Example: L.00.001.01 = Kindergarten, unit 1, lesson 1.

Directory conventions

• Domains live in curriculum/standards/domains/<domain-id>-<slug>/domain.md.
• Grade content lives in curriculum/k-12/grade-<gg>-<slug>/, with scope.md, units/unit-<nnn>-<slug>/unit.md, and lessons/lesson-<nn>-<slug>.md.

Cross-cutting lenses

In addition to its pillar, every unit and lesson declares which cross-cutting lenses it engages. Allowed values (see docs/philosophy.md §4):

ethics, egalitarianism, global, technology, environment, social-emotional, physical, intellectual, community, professional, critical-thinking.

Traceability guarantee

• A lesson MUST declare objectives: that resolve to real standard IDs.
• A standard lives in exactly one strand; a strand in exactly one domain.
• A domain anchors to a pillar. Thus every lesson traces to the vision.

The validator checks that lesson objectives: reference standards declared in the curriculum/standards/ tree.