In the past few years, colleges have been using waitlists to manage their enrollment. Determining who will accept their offer for admission is often times unpredictable, so they rely heavily on the waitlist to help.
Many of my students contact me asking what they should do. I tell them they should first see what the college requires. Opt-in to remain on the waitlist and if they allow it, send a letter of continued interest. Express that the colleges remains one of their top choices and why. Consider your major and and related club. If they allow for an additional recommendation letter from a teacher, coach or mentor, include it. Contact the admissions office and your specific admissions representative to ask questions. Be respectful of their time. If the colleges considers demonstrated interest, visit the campus when possible. There are no guarantees you will be offered a spot from the waitlist, so you should commit to another school. Sometimes the wait can be well-after the May 1 National College Signing Day, so sit back and wait and hope you will be offered a spot.