Overview

• UBA reported 75,175 students enrolled in the second cuatrimestre of 2025, an 18% increase over 2024.
• Registrations for the first partial exams in the first cuatrimestre surpassed 112,279, up 25% year over year.
• According to university data, 28% of those enrolled are still in the final two years of secondary school.
• Created in 1985, UBA XXI lets students take CBC subjects online with open, tuition‑free access and no age limit, including enrollment before finishing secondary school.
• The program supports nationwide participation through 33 active subsedes that provide local academic support and in‑person exam sites.