During the junior and senior years in high school, Cory becomes a hard working student, able to raise his GPA in addition earning an adequate SAT score to get accepted into colleges.As the series progresses, Cory's "slacker" tendencies diminish, and his neuroses increase, along with his pessimism and paranoia.Cory's personality changes somewhat as he gets older.
This leads Cory to occasionally develop an inferiority complex; such as Shawn gets better ideas than him when participating their high school's work study program, meeting art prodigy Alexandra Nechita, and Topanga gets a better job than this after they got married.
When Cory and Topanga begin their relationship, many women seem to be attracted to Cory, which Shawn explains as girls being attracted to men who are off the market.
One major difference between Cory and Shawn is that Cory seems to get more worked up or neurotic about random things, whereas Shawn is more laid back.
If Cory does not want to do something school-related, he will make a big production about the fact that he does not want to do it, and how unnecessary he finds it; whereas Shawn will just not do it, preferring to fall asleep or make paper airplanes.
For a listing of characters unique to that series, see the list of Girl Meets World characters.