Who leaked you this terrible information?! haha
Joint Enrollment IMO is one of the best kept secrets in GA. I currently do JE at Georgia Perimeter College for math, and I have learned more in those classes than my past years of math combined. HS math IMO was filled with busy work and crap. Back to the point.
My EC's include captain of debate, work at legal aid society, track, cycling and I still have time to lift. Debate is twice a week, I work at legal aid once for 3-4 hours on Mondays, track is everyday except I wasn't able to go on debate days (now that debate is just about over, I can go to track everyday). So whoe ever gave you this information is just wrong. I take four classes at my high school and then one class at GPC. I am done with my HS classes at 12. And then I have GPC classes from 1-2:15 on tuedsay and thursday. Mind you I don't take electives, or any joke classes. So if you are filling 2-3 periods with basket weaving, etc. JE won't work. But if you want to do it, it will work.