|Unfortunately, at this time, students going to Spain cannot change their visas once they're abroad. Therefore, the student must return to the United States (although he/she may be allowed to go to another country outside of the Schengen area) and renew his/her visa.
In general, and depending on the Consulate, students may submit a visa application from abroad to the appropriate Consulate. However, in some cases, students may be required to appear in person in order to retrieve their visas. Please contact your Consulate for more information.