* No Complete Records: While Rizal's academic achievements are well-documented, the specific courses he took haven't been preserved in a complete, publicly available format.
* Different Educational Systems: Rizal studied in different institutions (Ateneo Municipal de Manila, University of Santo Tomas, and universities in Europe) with varying curricula and course offerings.
* Changing Curriculum: Even in the institutions he attended, the course catalogs would have changed over time.
What we do know:
* Rizal studied a broad range of subjects, including:
* Liberal Arts: Philosophy, Literature, Languages (Spanish, Latin, English, French, German)
* Sciences: Mathematics, Physics, Chemistry, Natural History
* Medicine: His main field of study, with emphasis on ophthalmology
* Other Subjects: Drawing, Painting, Sculpture, Music
While we can't get an exact number, it's safe to say Jose Rizal was a truly well-rounded scholar who pursued a diverse range of academic interests.