Continue to finalize your decision-  By now you should know where you have been accepted and the financial opportunities you have at each school.  As you weigh your options, consider re-visiting your top choices and talk with students, professors and admissions representatives. 

Appeal offers-  If there is a school you really like but their financial aid offer doesn’t make it affordable for you, communicate with the school and see if they can offer any modifications to their current offer.  Don’t be demanding or try to pit one school against another.  Simply take the time to explain why this school is your top choice and why the costs of attending are still outside of your reach.  Offer any other attributes or special circumstances they may need to know when considering you for additional merit aid.
Commit to one school-  By the end of April, you need to commit to your chosen school and notify the other schools that you are declining their admission offer.  Send in a non-refundable deposit to your selected school. 

Get deposit refunds-  If you sent in deposits to any other schools this spring, make sure to request those refunds before May 1st.

Take the next step-  Your selected school may want you to complete a personality profile to help them match you to a compatible roommate.  They may offer summer pre-freshmen trips or activities to help the students get to know each other; which means you need to complete that paperwork soon.  Other forms regarding housing, insurance, orientation and pre-registration may be required soon too.