This document discusses different types of assessment used in education. It defines assessment as gathering evidence of student learning to make judgements about their progress. Assessment can be formative, done during instruction to provide feedback and improve learning, or summative, done at the end to evaluate learning outcomes and assign grades. Other distinctions made are between assessment and evaluation, criterion-referenced assessment which measures against a standard, norm-referenced which compares students, and ipsative which compares a student to their past performance. The key purpose of assessment is to improve instruction and support student learning.