> ## Documentation Index > Fetch the complete documentation index at: https://docs.learningcommons.org/llms.txt > Use this file to discover all available pages before exploring further. # Learning components by subject > Fetches a list of LearningComponents filtered by academic subject. This endpoint retrieves learning components for a specific subject area. Learning components are granular skills that break down broad standards into teachable units. Currently, learning components are primarily available for Mathematics, with additional subjects being developed. Use this endpoint when you need to: - Get all learning components available for a specific subject - Browse the complete set of skills/concepts for curriculum planning - Retrieve LCs for mapping to your own content or assessments - Export learning component data for analysis or integration The endpoint returns paginated results. Use the `limit` and `cursor` parameters to control the number of results returned and navigate through large result sets. **Related topics:** - [Understanding Learning Components](/knowledge-graph/entity-and-relationship-reference/learning-components) - [Available LC coverage by subject and state](/knowledge-graph/entity-and-relationship-reference/learning-components#current-lc-mappings) ## OpenAPI ````yaml /api-reference/knowledge-graph-api/openapi.yaml get /learning-components openapi: 3.0.3 info: title: Learning Commons Knowledge Graph REST API description: > REST API for accessing education knowledge graph data including academic standards, learning components, and curriculum information. **Key datasets:** - **Academic standards**: Official state standards from all 50 U.S. states sourced from 1EdTech's CASE Network - **Curriculum**: Structured course content including courses, lesson groupings (units, sections, modules), lessons, activities, and assessments - **Learning components**: Granular, teachable skills that break down broad standards into actionable instructional units - **Relationships**: Hierarchical and semantic connections between standards, learning components, and frameworks **Learn more:** - [Knowledge Graph Overview](/knowledge-graph/understanding-knowledge-graph/about-knowledge-graph) - [Academic Standards Dataset](/knowledge-graph/entity-and-relationship-reference/academic-standards) - [Learning Components Dataset](/knowledge-graph/entity-and-relationship-reference/learning-components) - [Quick Start Guide](/knowledge-graph/getting-started/quickstart) version: '0' servers: - url: https://api.learningcommons.org/knowledge-graph/v0 description: Production server security: - ApiKeyAuth: [] tags: - name: Academic standards description: Academic standards operations - name: Curriculum description: Curriculum and course operations - name: Hierarchy description: Hierarchical navigation operations - name: Learning components description: Learning component operations - name: Learning progressions description: Learning progression and prerequisite relationships - name: Search description: Search and discovery operations - name: Standards crosswalks description: Standards crosswalk operations - name: Standards frameworks description: Standards frameworks operations paths: /learning-components: get: tags: - Learning components summary: Learning components by subject description: > Fetches a list of LearningComponents filtered by academic subject. This endpoint retrieves learning components for a specific subject area. Learning components are granular skills that break down broad standards into teachable units. Currently, learning components are primarily available for Mathematics, with additional subjects being developed. Use this endpoint when you need to: - Get all learning components available for a specific subject - Browse the complete set of skills/concepts for curriculum planning - Retrieve LCs for mapping to your own content or assessments - Export learning component data for analysis or integration The endpoint returns paginated results. Use the `limit` and `cursor` parameters to control the number of results returned and navigate through large result sets. **Related topics:** - [Understanding Learning Components](/knowledge-graph/entity-and-relationship-reference/learning-components) - [Available LC coverage by subject and state](/knowledge-graph/entity-and-relationship-reference/learning-components#current-lc-mappings) operationId: listLearningComponents parameters: - name: academicSubject in: query required: true description: >- The academic subject area to retrieve learning components for. Currently, Mathematics has the most comprehensive coverage, with additional subjects being developed. schema: $ref: '#/components/schemas/AcademicSubjectENUM' - $ref: '#/components/parameters/LimitParam' - $ref: '#/components/parameters/CursorParam' responses: '200': description: Successfully retrieved list of learning components content: application/json: schema: allOf: - $ref: '#/components/schemas/PaginatedResponse' - type: object properties: data: type: array items: $ref: '#/components/schemas/LearningComponent' example: data: - identifier: 0013fbee-3e76-500f-9978-42aa1a65f105 description: Use conversions to solve multi-step real-world problems academicSubject: Mathematics inLanguage: en-US dateCreated: '2025-04-01' dateModified: '2025-04-01' author: Achievement Network provider: Learning Commons license: https://creativecommons.org/licenses/by/4.0/ attributionStatement: >- Knowledge Graph is provided by Learning Commons under the CC BY-4.0 license. Learning Commons received learning components under CC BY-4.0 from Achievement Network. - identifier: 0046446a-0a9b-5ace-92a3-23d4bb158c68 description: >- Determine the lateral surface area of three-dimensional cylinders in real-world problems academicSubject: Mathematics inLanguage: en-US dateCreated: '2025-04-01' dateModified: '2025-04-01' author: Achievement Network provider: Learning Commons license: https://creativecommons.org/licenses/by/4.0/ attributionStatement: >- Knowledge Graph is provided by Learning Commons under the CC BY-4.0 license. Learning Commons received learning components under CC BY-4.0 from Achievement Network. pagination: limit: 100 nextCursor: >- eyJpZGVudGlmaWVyIjogIjA5OWNlY2NiLTQ3MzItNTZjMC1iZGIxLTYxZjljNmZjYmQ2NSJ9 hasMore: true '400': description: Bad request - Missing required parameter or invalid values content: application/json: schema: $ref: '#/components/schemas/Error' example: error: ValidationError message: >- Missing required parameter: academicSubject. Example: ?academicSubject=Mathematics requestId: req_12345 '422': description: >- Unprocessable Entity - Invalid parameter values (e.g., enum value not in allowed list) content: application/json: schema: $ref: '#/components/schemas/Error' example: error: ValidationError message: >- Input should be 'English Language Arts', 'Mathematics', 'Science', 'Social Studies', or 'Other' requestId: req_12345 '500': description: Internal server error content: application/json: schema: $ref: '#/components/schemas/Error' example: error: InternalServerError message: >- An unexpected error occurred while retrieving learning components requestId: req_12345 components: schemas: AcademicSubjectENUM: type: string description: Academic subject area enum: - English Language Arts - Mathematics - Science - Social Studies - Other PaginatedResponse: type: object description: Generic cursor-based paginated response wrapper required: - data - pagination properties: data: type: array description: Array of result items items: type: object pagination: type: object description: Cursor-based pagination metadata required: - limit - hasMore properties: limit: type: integer description: Maximum number of results returned per page nextCursor: type: string nullable: true description: >- Cursor for fetching the next page. Null if no more results available. Pass this value as the 'cursor' parameter in the next request. hasMore: type: boolean description: >- Indicates whether there are more results available after this page LearningComponent: type: object description: > Represents a single, well-defined skill or concept that students are expected to learn. Learning Components are granular, precise representations of individual skills or concepts that break down broad educational standards into teachable and measurable parts. While state standards often define learning goals at a high level (sometimes encompassing multiple ideas across weeks of instruction), LCs operate at the level where instruction happens: during a lesson, an activity, or a single question. Each LC is: - **Instructionally actionable**: Designed to guide daily teaching decisions and interventions - **Aligned to academic standards**: Connected to CASE-aligned standards through semantic relationships - **Interoperable**: Usable across diverse curricula, assessments, and platforms - **Machine-readable and human-interpretable**: Tagged with unique identifiers to support AI-driven content recommendations with transparent intent LCs are developed through collaborative, expert-driven processes with input from experienced educators, primarily from Achievement Network (ANet). required: - identifier - author - provider - license - attributionStatement properties: identifier: type: string description: >- The unique identifier for this learning component in the Knowledge Graph system. This is a system-generated identifier that remains stable across data updates and can be used to reference this LC in queries and relationships. description: type: string description: >- A clear, concise statement describing the specific skill or concept this learning component represents. This is the instructional target that can be taught in a lesson or assessed in a question. academicSubject: $ref: '#/components/schemas/AcademicSubjectENUM' description: >- The academic subject area for this learning component. Currently, learning components are primarily available for Mathematics, with additional subjects being developed. inLanguage: $ref: '#/components/schemas/LanguageENUM' description: The language of the content, in BCP 47 format dateCreated: type: string format: date nullable: true description: The date on which this learning component was created dateModified: type: string format: date nullable: true description: >- The date on which this learning component was most recently modified. Use this field to track when LCs were last updated. author: type: string description: >- The author or creator of this learning component, typically the organization that developed the LC framework provider: type: string description: >- The service provider or organization that makes this data available in the knowledge graph license: type: string format: uri description: A URL to the license document that applies to this content attributionStatement: type: string description: >- A textual credit that acknowledges the source and creator of this work, as required by the CC BY 4.0 license. If you display or redistribute this learning component, you must include this attribution statement to comply with the license terms. Error: type: object description: Standard error response object returned for all error conditions required: - error - message - requestId properties: error: type: string description: >- A machine-readable error type identifier (e.g., ValidationError, NotFoundError, InternalServerError) message: type: string description: >- A human-readable error message that explains what went wrong and may include actionable guidance requestId: type: string description: >- A unique identifier for this request, useful for debugging and support details: type: object description: >- Optional additional details about the error, such as validation failures or field-specific issues additionalProperties: true LanguageENUM: type: string description: Language code in BCP 47 format enum: - en-US - es-US parameters: LimitParam: name: limit in: query required: false description: >- Maximum number of results to return. Default is 100. Maximum allowed is 1000. schema: type: integer minimum: 1 maximum: 1000 default: 100 CursorParam: name: cursor in: query required: false description: >- Cursor for pagination. Obtain this value from the 'nextCursor' field in the previous response. Omit for the first page. schema: type: string securitySchemes: ApiKeyAuth: type: apiKey in: header name: x-api-key description: >- API key for authentication. Include your API key in the x-api-key header for all requests. ````