Online classes are usually fine, I'm taking an online stats and microeconomics class over the summer at a community college to fulfill the requirement. I'd contact administrative staff to make sure, but I don't see a problem with it.
Taken Oct. 14th
V: 165 (96%)--->690 (740-800 estimate)
Q: 159 (82%)--->750 (720-800 estimate)
AW: 4.5 (72%)
I knew I tanked the quant the day of, I was scoring 90th+ on Manhattan too... But it could have been way worse. Satisfied overall.