In the majority of cases, you should only apply to one program. Education Abroad and your college will only nominate or endorse you for one program (with one application and course approval form) with the exception of cases where a back-up is recommended or required. If you are concerned about your admission into your preferred program your Education Abroad Advisor can help you determine if a back-up option is appropriate.
In all cases, submitting applications for more than two programs is not permitted. This is key so that you can proceed with decision-making, critical next steps in the timeline, and ultimately commit and be accepted to a single primary program for your semester or year abroad.