If you want to study abroad, you need a valid passport from your country that will last at least six months after your planned return date. 

If you don't have a passport, or if your passport is about to expire, make sure you apply or renew it as soon as you can! U.S. citizens can 

visit the U.S. Department of State's website for more information about passports and processing time.

U.S citizens do not require a tourist visa for stays less than 180 days, but return ticket required. For further information, please refer to 

the Costa Rican Ministry of Foreign Affairs web page.