There are many ways to overcome the obstacles and face the objections raised by critics.

It’s easy to get excited about the virtues of mastery, or competency-based, learning.

What’s not to like about a system that guarantees that students learn, as opposed to one that is focused on the amount of time students sit in seats?

My new book, “From Reopen to Reinvent,” makes a full-throated plea for more K-12 schools to adopt mastery-based learning, in which students only move on from a concept once they demonstrate mastery of the knowledge and skills at hand. When done well, it guarantees that each and every student leaves K-12 schools prepared for postsecondary education or the workforce.