MN teachers Dig Deep - Teachers and Tenure By Heidi Holtan • Jul 14, 2017 Listen to part 3 of our Dig Deep conversation on education with liberal commentator Aaron Brown and conservative Chuck Marohn. Chuck has an idea for a new system for teachers. Aaron IS a teacher and has some of his own ideas to offer. Send us your thoughts on Dig Deep on Education. And don't forget to sign up for the podcast of Dig Deep, via iTunes.