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e-rater® Scoring Engine

Evaluates students’ writing proficiency with automatic scoring and feedback

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How the e-rater engine uses AI technology

ETS is a global leader in educational assessment, measurement and learning science. Our AI technology, such as the e-rater® scoring engine, informs decisions and creates opportunities for learners around the world.

The e-rater engine automatically:

  • assess and nurtures key writing skills
  • scores essays and provides feedback on writing using a model built on the theory of writing to assess both analytical and independent writing skills

About the e-rater Engine

This ETS capability identifies features related to writing proficiency.

How It Works

See how the e-rater engine provides scoring and writing feedback.

Custom Applications

Use standard prompts or develop your own custom model with ETS’s expertise.

Use in Criterion® Service

Learn how the e-rater engine is used in the Criterion® Service.


E-rater as a Quality Control on Human Scores

See All Research (PDF)

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Ready to begin? Contact us to learn how the e-rater service can enhance your existing program.

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