Great advice. You don't realize it, but you have opportunities being handed to you now that won't come so easily later. I miss school (high school & college) for so many reasons. Having lots of peers right there to talk to. So many activites. A library full of books. Sports and clubs. A wide variety of subjects.
A mentor once told me to take advantage of everything available to you on your "school buffet". That's what it's there for. It's a great opportunity to be exposed to many different things, easily, and for free. How else will you know if you like it? Sure, you may not like the class in English literature or the ballet or playing soccer in P.E. But try it anyway.
Years from now you'll probably be sitting in a cubicle by day and changing diapers by night wishing you could experience something new and different once in a while. Now is your chance. Do it.