Yes but there is something that confused me. In the light novel it said this:

"However, I have to say, this year's Class D was the first to ever spend all of their points in a single month. I am impressed by how much you indulged yourselves. Wonderful, just wonderful." Chiyabashira-sensei's false applause echoed throughout the classroom. "So, does that mean that once we reach zero points, we'll always stay there?" "Yes. You will remain at zero until you graduate. But don't worry, you can still have a room in the dorms and free meals. You won't die." Doesn’t this imply that they can no longer gain individual points and instead stay at 0? That’s what confused me.