Teaching is a tireless act of love. Good teachers often pour their hearts into their work. It’s exhausting, and rewarding, but also, at times, painful. The 2018-2019 school year was particularly painful for me. I was teaching 7th grade science—a class where directions like “do NOT drink the hydrochloric acid” need to be frequently, and urgently repeated—and I was mourning the passing of my last grandparent.