PrairieLearn helps institutions deliver and scale high-quality assessments with randomized auto-graded questions. As the most comprehensive computer-based assessment platform, it supports a wide range of formats, including numerical and symbolic input, interactive graphing, drag-and-drop, and coding. To complement its powerful and reliable auto-grading, PrairieLearn also includes manual and AI-assisted grading for code quality, hand-written, and open-ended responses.