It says:
"Teacher’s Report (Optional)
If you have an additional teacher whose recommendation letter you would like included with your application, please indicate their first and last name and email address. Please note that since Georgetown University only requires one recommendation letter from a high school teacher, this section is optional."
Can this LoR include my club sponsor who was also my teacher for a semester sophomore year, or does it have to be from a purely academic teacher? Thanks ahead of time!