Microcosm Publishing

On Subbing is a quiet classic. It's impossible to put down, or forget, Dave Roche's vivid, self-deprecating, tales of woe from working as a substitute teaching assistant in Portland's elementary schools in the early 2000s. He writes about the good days and the terrible ones, helping kids who can't function in normal classrooms focus on their work, keeping kids from fighting, and keeping his composure while they tease him or adorably flirt with him. It's a real heartwarming ticket to putting a smile on your face and turning your day around.