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APIs
Growth Planner API
Plot a student's projected growth using Lexile or Quantile measures.
API Calls
API Schemas
This topic provides an overview of the available schemas used in the Growth Planner Chart API.

APIs
- Scoring Service API
  Assigns an ability estimate to an assessment-taker in the form of a Lexile Reading, El Sistema Reading, or Quantile measure.
- Lexile Text Analyzer API
  Analyzes text to produce Lexile text measures on custom content.
- Titles API
  Access more than 470,000 hardcover, e-books, paperback, trade and other titles.
- Forecasting API
  Forecast an individual student or group performance on an upcoming assessment.
- Growth Planner API
  Plot a student's projected growth using Lexile or Quantile measures.
  - About Growth Planner API
    This documentation is designed for developers, system integrators, product managers, and researchers who need to understand, implement, or evaluate the capabilities of this API.
  - API Calls
    - Getting Started with API Access
      To access the API, partners must authenticate using the OAuth 2.0 Client Credentials flow. This ensures secure, token-based access for approved applications.
    - Authentication – Retrieve an Access Token
      POST/authToken: Retrieve an Auth Token for use with protected endpoints.
    - Growth Planner Chart API Overview
      An API to generate Lexile and Quantile Growth Charts.
    - Chart Generation – Summative Data
    - Chart Generation – Interim Data
    - API Schemas
      This topic provides an overview of the available schemas used in the Growth Planner Chart API.
    - Code Examples
      Node.js and Python examples demonstrate how to authenticate and generate a custom student growth chart.
- Oral Reading API
  Measures a student's oral reading ability and the oral readability of text on the same scale.
- PowerV API
  Create and access vocabulary lists for over thousands of titles with the Titles Database.
- Career Database APIs
  Identify a career’s reading and math demands in Lexile and Quantile metrics for goal setting and career preparedness.

API Schemas

This topic provides an overview of the available schemas used in the Growth Planner Chart API.

The Growth Planner Chart API supports schema definitions for key parameters such as targetRange, measures, graphSize, scale, language, and others. These schemas define the expected structure of the request and response payloads required to generate Lexile and Quantile Growth Charts.

To view the complete and most up-to-date schema definitions, please refer to the Swagger documentation:

This API generates Lexile and Quantile growth charts based on student measurement data. It requires no personally identifiable information (PII), and no data is stored. All endpoints are secured and require authentication via a bearer token obtained from the authToken endpoint.

For details on obtaining an authentication token and interacting with protected endpoints, see the authentication section in the Swagger docs and use the Authorize button to test requests.