House Points
It is easy to get points, but also easy to lose them.
Depending on the professor, the most common reasons to get points are:

1. Doing your homeworks IN TIME.
2. Going to all of your classes.
3. Respecting the school rules.
4. Saving someone's life...
5. Participate in a school activity.

To lose points:

1. Being rude to a professor or a classmate.
2. Being late for class.
3. Not doing your homework.
4. Not listening to the professors.
5. Going out of your common room at night.
6. Going to the 3rd floor.
7. Going into the forest.
8. Going into another house's common room.