This document defines assessment and describes four main types:
1) Assessment as learning involves students self-assessing and providing peer feedback to improve their own learning.
2) Assessment for learning uses feedback to help students improve and close gaps in their understanding.
3) Assessment of learning evaluates students' understanding at the end of a period through tests, projects, or benchmarks.
4) Diagnostic assessment collects initial data on students' prior knowledge, while placement assessment determines the appropriate course level for students. Formative and summative assessments monitor and evaluate the learning process.