The word assessment describes vastly different things. Yes, the nail-biting, end-of-year exam is an assessment. But so is the couple-questions quiz a teacher gives at the end of a lesson. These lower-stakes, frequent assessments are vital for student performance. Assessments create feedback for teachers and students alike, and the high value of timely feedback is well-documented by learning scientists.
The concept of free and accessible learning materials is not new to education, but a national movement called #GoOpen is accelerating the creation and sharing of open educational resources (OER) by educators, and helping to improve equity in the process.