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Score Interpreter
Retrieve student Lexile and Quantile measures and forecast performance on an upcoming assessment.
About Score Interpreter
Forecasting REST API
The Forecasting API forecasts an individual student or group performance on an upcoming assessment. To accomplish this, the API uses a proprietary growth model, prior information about a student or group of students, and information about an examination to be taken in the future.

Products, Tools, and Services
- Score Interpreter
  Retrieve student Lexile and Quantile measures and forecast performance on an upcoming assessment.
  - About Score Interpreter
    - Scoring Service REST API
      The process of scoring student assessments and reporting results has evolved greatly over the years. From teachers sitting with paper-based answer sheets to bubble-sheets fed through a machine that produces a percent correct, technology has helped to enhance the process of scoring tests. While percent correct on an assessment can be valuable, many assessments benefit from reporting an estimate of the underlying student ability in an educational construct. These ability estimates provide indicators of status and can be used to monitor growth over time.
    - Forecasting REST API
      The Forecasting API forecasts an individual student or group performance on an upcoming assessment. To accomplish this, the API uses a proprietary growth model, prior information about a student or group of students, and information about an examination to be taken in the future.
    - State Performance Standards Database
      The State Performance Standards Database aligns Lexile® and Quantile® measures with state proficiency standards for those states whose assessments are linked with the Lexile and or Quantile Frameworks and use the State Performance Standards Database.
  - Score Interpreter FAQ
  - Service Level Agreement for Score Interpreter
- Get Measurements
  Use our products, tools, services and APIs to get the measurements you need.
- Lexile Text Analyzer
  Learn how to prepare text and use your analyzer to get Lexile text measures.
- WordBank
  Discover words across grade levels and subject areas that students will encounter in classroom reading.
- The Hub
  An online platform that provides easy access to more than a dozen reading and math tools.
- Quantile Sequencing Service
  Get research-driven information to direct users to appropriate resources for learning a skill or concept.

Forecasting REST API

The Forecasting API forecasts an individual student or group performance on an upcoming assessment. To accomplish this, the API uses a proprietary growth model, prior information about a student or group of students, and information about an examination to be taken in the future.

See About Forecasting REST API for more information.