# Introduction
Express Class is a gathered learning capture tool that allows administrators and facilitators to quickly and easily document gathered learning after the learning takes place and give transcript credit to the learners. The Express Class API allows clients to create an Express Class process and in turn record completions for users. To learn more about the Express Class feature, please read through Cornerstone's Help Articles. These in-depth articles outline the application logic which the Learning Assignment API follows as well.
# Throttling
The throttling limit for the Express Class API is 20 requests per minute, 1,200 requests per hour and 28,800 requests per day.