How do you know your depression will start again in a month? Sometimes we let old routines become self-fullfilling prophesies. Even if you are going to the same building, each year of school is different. Sounds like this year your class will be the oldest in the school - different from last year when there were some older kids around. Other kids change over the summer, sometimes actually maturing. . .

If things are still a problem, you might want to check out if there are on-line schools in your state. I'm a special ed. teacher in an on-line school and I have many students who's main problem is social anxiety. We try to have activities like field trips and things like that to get students together sometimes but for the most part they are at home with an adult, and teachers and others just a phone call or e-mail away.

That isn't an excuse for sleeping all day and not doing any work, but if it is a real issue it might help to get the education you need.