12 years training for this role!

So far, my children's senior year of high school has been mostly wasted time. This is especially so as their graduation day comes ever closer. I propose that we alter senior year from one of listening from the back of the classroom to one of teaching from the front. It should be year when the seniors go out into all the lower grades, K through 11, and be teachers's assistants. Who else has a better understanding of how to be useful and successful in schools than do these young adults that have spent 12 years training for this role?