> ## 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. # Prerequisites for a standard > Fetches StandardsFrameworkItems that build towards the specified academic standard through the "buildsTowards" relationship. This endpoint retrieves academic standards where proficiency supports the likelihood of success in the target academic standard. These are the foundational skills or concepts that contribute to mastery of the given academic standard. The relationship is directional but does not require strict prerequisite order - students don't need to fully master prerequisites before engaging with the target academic standard. Use this endpoint when you need to: - Identify foundational academic standards students should be familiar with before tackling a target academic standard - Trace backward through a learning progression to understand dependencies - Design remediation or review activities based on prerequisite skills - Map out a coherent learning pathway for students **Note:** Learning progression data is currently based on Student Achievement Partners' Coherence Map for Common Core State Standards for Mathematics. Coverage for other subjects and frameworks may be limited. The endpoint returns paginated results. Use the `limit` and `cursor` parameters to control the number of results returned. **Related topics:** - [Understanding the buildsTowards relationship](/knowledge-graph/entity-and-relationship-reference/learning-progressions#buildstowards) ## OpenAPI ````yaml /api-reference/knowledge-graph-api/openapi.yaml get /academic-standards/{caseIdentifierUUID}/prerequisites 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: /academic-standards/{caseIdentifierUUID}/prerequisites: get: tags: - Academic standards - Learning progressions summary: Prerequisites for a standard description: > Fetches StandardsFrameworkItems that build towards the specified academic standard through the "buildsTowards" relationship. This endpoint retrieves academic standards where proficiency supports the likelihood of success in the target academic standard. These are the foundational skills or concepts that contribute to mastery of the given academic standard. The relationship is directional but does not require strict prerequisite order - students don't need to fully master prerequisites before engaging with the target academic standard. Use this endpoint when you need to: - Identify foundational academic standards students should be familiar with before tackling a target academic standard - Trace backward through a learning progression to understand dependencies - Design remediation or review activities based on prerequisite skills - Map out a coherent learning pathway for students **Note:** Learning progression data is currently based on Student Achievement Partners' Coherence Map for Common Core State Standards for Mathematics. Coverage for other subjects and frameworks may be limited. The endpoint returns paginated results. Use the `limit` and `cursor` parameters to control the number of results returned. **Related topics:** - [Understanding the buildsTowards relationship](/knowledge-graph/entity-and-relationship-reference/learning-progressions#buildstowards) operationId: listPrerequisiteAcademicStandards parameters: - $ref: '#/components/parameters/CaseIdentifierUUIDPath' - $ref: '#/components/parameters/LimitParam' - $ref: '#/components/parameters/CursorParam' responses: '200': description: Successfully retrieved list of prerequisite standards content: application/json: schema: allOf: - $ref: '#/components/schemas/PaginatedResponse' - type: object properties: data: type: array items: $ref: '#/components/schemas/StandardsFrameworkItemSummary' example: data: - caseIdentifierUUID: 6b9ee241-d7cc-11e8-824f-0242ac160002 statementCode: 5.OA.A.2 description: >- Write simple expressions that record calculations with numbers, and interpret numerical expressions without evaluating them. *For example, express the calculation "add 8 and 7, then multiply by 2" as $2 \times (8 + 7)$. Recognize that $3 \times (18932 + 921)$ is three times as large as 18932 + 921, without having to calculate the indicated sum or product.* author: 1EdTech 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 state standards and written permission under CC BY-4.0 from 1EdTech. - caseIdentifierUUID: 6b9ed00e-d7cc-11e8-824f-0242ac160002 statementCode: 4.OA.B.4 description: >- Find all factor pairs for a whole number in the range 1—100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1—100 is a multiple of a given one-digit number. Determine whether a given whole number in the range 1—100 is prime or composite. author: 1EdTech 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 state standards and written permission under CC BY-4.0 from 1EdTech. pagination: limit: 100 nextCursor: null hasMore: false '400': description: Bad request - Invalid CASE UUID or pagination parameters content: application/json: schema: $ref: '#/components/schemas/Error' example: error: ValidationError message: >- Invalid CASE UUID format. Must be a valid UUID (e.g., "6bd8552e-6f8f-4538-bf33-d016ac080178"). requestId: req_12345 '404': description: Academic standard not found content: application/json: schema: $ref: '#/components/schemas/Error' example: error: NotFoundError message: >- Academic standard with CASE UUID "6bd8552e-6f8f-4538-bf33-d016ac080178" not found. Verify the UUID is correct. 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 prerequisite standards requestId: req_12345 components: parameters: CaseIdentifierUUIDPath: name: caseIdentifierUUID in: path required: true description: The CASE UUID identifier from the CASE Network published by 1EdTech schema: type: string format: uuid 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 schemas: 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 StandardsFrameworkItemSummary: type: object description: > A lightweight representation of a StandardsFrameworkItem containing only essential identifying information. This summary format is used in relationship endpoints (learning progressions, related standards) to keep responses fast and enable efficient graph traversal. To retrieve full details for a standard, use the GET /standards/{caseIdentifierUUID} endpoint. required: - caseIdentifierUUID - author - provider - license - attributionStatement properties: caseIdentifierUUID: type: string format: uuid description: >- A UUID referencing the item in the CASE Network published by 1EdTech. Use this identifier to retrieve the full standard details via GET /standards/{caseIdentifierUUID}. statementCode: type: string nullable: true description: >- A short, human-readable code that uniquely identifies this standard within its framework context (e.g., "3.NF.A.1", "5.NF.A.1"). May be null for organizational groupings. description: type: string nullable: true description: >- The full text of the standard describing what students should know or be able to do jurisdiction: $ref: '#/components/schemas/JurisdictionENUM' description: >- The state, territory, or jurisdiction responsible for this standard (e.g., "Iowa", "California", "Multi-State") author: type: string description: >- The author or creator of this content, typically the organization that published the standards 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 standard, 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 JurisdictionENUM: type: string description: US state, territory, or multi-state designation enum: - Alabama - Alaska - Arizona - Arkansas - California - Colorado - Connecticut - Delaware - Florida - Georgia - Hawaii - Idaho - Illinois - Indiana - Iowa - Kansas - Kentucky - Louisiana - Maine - Maryland - Massachusetts - Michigan - Minnesota - Mississippi - Missouri - Montana - Nebraska - Nevada - New Hampshire - New Jersey - New Mexico - New York - North Carolina - North Dakota - Ohio - Oklahoma - Oregon - Pennsylvania - Rhode Island - South Carolina - South Dakota - Tennessee - Texas - Utah - Vermont - Virginia - Washington - Washington, D.C. - West Virginia - Wisconsin - Wyoming - Multi-State 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. ````