text: Also, an extracurricular activity will help students keep their grades up. Most extracurricular activities require kids to have good grades to participate. This is a very good motivation for students to keep their grades up. not only does an extracurricular activity motivate students to keep their grades up, but extracurricular activities help make you think harder. A report written by scientist Generic_Name, showed that 93% of students who participated in an extracurricular activity, reported that all of their grades went up by at least 5%.