Generally, international students must hold a secondary school diploma equivalent to the Spanish "Título de Bachiller." They must also pass the "Prueba de Acceso a la Universidad" (PAU or EBAU) exams or the specific UC3M entrance exam for international students ("Prueba de Admisión"). Proof of Spanish and/or English language proficiency (DELE, SIELE, IELTS, TOEFL) is required depending on the language of instruction of the chosen program. Each program may have specific subject requirements (e.g., mathematics for engineering).