About the creator


My name is Trevor Klee. I’m the creator of 21st Night. I’m a professional tutor, owner of a small tutoring company, and a consultant to other tutoring businesses.

21st Night started off as a complicated spreadsheet that I used when I was studying for some really tough standardized tests. I adapted it as an app to use with my tutoring clients, and my students saw some great results. So, I decided to release it to the world!

Here’s a poster of me from when I taught Western philosophy to thousands of Chinese people, during a brief stint as an instructor for a Chinese startup. It was a lot of fun, and I really hope to use those notes and slides again sometime.