A unique approach to scaling personal attention I've seen work wonders is having a good teacher choose several well-performing students per course to voluntaril

A unique approach to scaling personal attention I've seen work wonders is having a good teacher choose several well-performing students per course to voluntarily tutor the next generation on course-wide group projects. In very few years there were about ten capable tutors, each personally and closely helping just one or two 4-5 person groups on large assignments -- overall grades, student satisfaction and projects' quality skyrocketed.