Tests are used to assess the user's proficiency in a language. There are several different tests on Duolingo:
- A placement test can be taken at the beginning of a course to determine how advanced the user is and let them skip ahead according to their skill level.
- Similarly, skip level tests let the user skip ahead through individual skills.
- Checkpoints in the course allow the user to skip several levels at once.
Duolingo Test Center is a separate application that administers a language proficiency test and produces a score out of 10 that can be shown to prospective employers or schools.