I can write my personal reaction.

I think when you are in the school, you should focus on it. It means you do all your homework in order to learn, and have good grades. However, when you talk about summer, I think you should do whatever you want. It means summer is your own time. For example, you can study art or swimming in the pool. Summer time is a time where you can be relaxed, forget school and focus on your personal entertainment. It’s going to be a reward. And it gives you the energy to start a new year with a different perspective of the school.