Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

You're a Star (10 points): Collect 1 Extra Credit Star.
30 Stars (20 points): Collect 30 Extra Credit Stars.
70 Stars (30 points): Collect 70 Extra Credit Stars.
Super Star (50 points): Collect all of the Extra Credit stars.
Smart Alec (10 points): Get 500 answers correct.
Fast Fingers (10 points): Get an answer correct in under 3 seconds.
Close Call (10 points): Peek at your classmate's paper but don't follow.
Smarter Than a 5th Grader (20 points): Win One Million Dollars in any game.
Teachers Pet (15 points): Win One Million Dollars without cheating.
Ego Trip (15 points): Win One Million Dollars in under 5 minutes.
Big Win (5 points): Come first in a multiplayer game.
The Great Achievement Hunt (5 points): For me to know and you to find out.