This document discusses the importance of assessing for understanding, also known as checking for understanding. It provides 3 key benefits: 1) It fosters good teaching by allowing teachers to adjust instruction based on student feedback. 2) It empowers students to take responsibility for their own learning by monitoring progress and setting goals. 3) It provides opportunities for students to demonstrate their learning in various ways to deepen understanding over time. Examples are also provided of different formative assessment techniques teachers can use to check for understanding in the classroom.