Gavin, the leader of the nerd group, has an Apple Classic in his room although he never uses it.
Year of feature (shown above)
This movie probably takes place in present day, or at least some time after 1999. That means the Mac would be about nine years old. I don't know if that's 100% realistic. Of course, I have a Mac Classic and I'm still using it to this day, but it's not good for everyday use and therefore isn't realistic to have in an average kid's room.