Not ISFJ but my brother is and I can answer these surface questions since you're taking a poll...
What type of school/college did you go to?
A public high school and now a two-year local college that transfers directly to a university through the program.
What was your college major?
Commercial Photography.
What classes did you take?
The program is very technical-oriented so most of the core courses are photo-related. Classes like portrait and on location photography, digital photography, studio lighting, etc. General major courses include English 1 and 2, Speech, College Algebra, etc.
What activities/sports did you participate in?
He works part-time at Disney World photographing the park guests. He also goes to the beach a lot with his friends, plays video games, and spends too much time with his obnoxious enneagram 2 girlfriend.
As for what he is like generally from an outside perspective...he's generally warm and friendly but he is still coming out of his moody teenager phase and playing the "I hate my family" game. He's really devoted to his friends and will do a lot for them until he experiences this to excess and then he withdraws and sits in his bedroom for a couple days alternating between sleeping, eating junk food, and playing video games. I think he's an enneagram 9w8 so/sx. He's pretty easy going most of the time and has a life is good mentality until you provoke him enough and then it's like oh fuck get out of his way. He's also incredibly lazy in the sense that real world practical matters are not on his priority list at all and instead it's more like I'm going to do what I want that makes me feel good when I want to and nobody can tell me otherwise.