Yelp reviews and bad teachers

Society dramatically undervalues great teachers. Teaching is incredibly high leverage. One amazing teacher can inspire and empower 1000s of students over a career. The things these students go on to do can have an immeasurable long-term impact on the world. Conversely, society is far too tolerant of bad teachers. People are more likely to leave a six-paragraph negative Yelp review for a rude server than leave formal criticism for bad teachers.