That mix of digital and human elements is what makes the “blend” in blended learning.Today’s push is to make the most of teacher time by deploy- ing educators as tutors and mentors who focus on the precise concepts that each student is missing, without holding back those who are ready to move ahead, and without abandoning those who need supplemental instruction on concepts they haven’t yet mastered.This dramatically different style of instruc- tion—variously referred to as “blended learning,” “hybrid instruction,” or “personalized learning”—attempts to optimize the combination of empow- ering technology and human touch. And there are indications that it might not only be helpful for students who get lost in today’s mass-lecture model of teaching, and a relief for heavily burdened teachers, but also an answer to the spiraling costs of conventional schooling that have become such a drag on families and communities.