It is how classes (even in person ones) are organized. Assignments, quizzes, links to online textbooks, discussion boards, student/teacher messaging, student group messaging, etc. From the teacher side, I'm not sure if there is a backup copy for things like grades outside of Canvas. It's that pervasive.

Everything from middle school up to grad school.

It's a particularly interesting time to have this happen too -- many finals going on now.

It’s a “learning management system.” It replaces a course website in most instances. It’s also used for course grades and you can submit assignments or take quizzes.

Grades, lessons, quizzes, exams, homework submission, rosters, messaging platform. Lots of things.

If you’re a student or teacher: nearly everything that matters. Homework, materials, lectures, grades. It’s all on canvas.