<p>I did a bunch of extracurriculars like Mock Trial, Red Cross, Track, Model UN, Group Workcamp Foundation, Young Life, orchestra, tutoring and stuff like that during the past three years.
I know that colleges want quality over quantity, so how should I use my Senior year to go in depth with some of those clubs?</p>
<p>Try for leadership positions. Do meaningful things for these organizations. Elaborate on your most meaningful experiences in your essays. Your senior year should help you solidify your dedication to these clubs / activities through leadership and lasting effort</p>