Under the principal of spaced repetition, you might also want people in the workforce infrequently tutoring college students, graduate students infrequently tutoring high school students, college students infrequently tutoring middle schoolers, so on and so forth.
The teacher-student heirarchy was decent way to mass produce educational services during industrialization but creates unnecessarily rigid classifications between learners at different levels of knowledge.
I think there is room for a more mutualistic exchange, between tutors who would like to clarify their existing knowledge, and between students who like to learn something new, to emerge in the future.