Peña has a Bachelor's degree in Labor Relations from the University of Puerto Rico at Río Piedras, and a Master's degree in the same major from the Interamerican University of Puerto Rico, Metropolitan Campus.
It was built in San Juan due to the large success of the Polytechnic Institute of Puerto Rico.
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She obtained her Juris Doctor Magna Cum Laude from Interamerican University of Puerto Rico School of Law in 1999, after spending a summer at the International Studies Center at the José Ortega y Gasset Foundation in Toledo, Spain studying European Community Law and Comparative Spanish Family Law.