As the others have answered, I would put it in both. Format it to be something like:
Experience
Teaching Assistant - University of XYZ - 2014-2017
- Responsible for supervising undergraduate students in their research
- Led recitation for 3 sections of underwater basket weaving courses
- Saved the professors life from a deadly chemical explosion
- Secured funding from a private donor worth 50 bajillion dollars
Education
PhD, Swimming - University of XYZ - 2017
Thesis: "The impact water Pokemon have had on the ancient aliens and their influence on underwater basket weaving in the 18th century"
Note: Please don't copy this verbatim. It's meant to be humorous and serves only as a template.