I remember the first time I heard the words "formative assessment." I was a junior in college taking a class called Measurement and Evaluation, and my professor wasn't very good at making the topic of assessment exciting... which in hindsight, is very unfortunate.
Fast forward about 10 years, and my principal asked us all to participate in two book studies for the books Embedded Formative Assessment by Dylan William and Feedback by Jane Pollock. Through reading these books, I discovered the importance of purposefully using formative assessments in my classroom.