Off the top of my head, the classes I remember discussing are:

- Sciences (Biology, Chemistry, Physics)
- Mathematics (Algebra, Geometry, Calculus, Statistics)
- Comparative Government
- Cultural Relativism (can also be called Comparative Cultures)
- Engineering (from Simple Machines to Biotech)
- Basic Combat (self-defense, basically)
- History-as-case-study (thrown around as a possibility because of course we don't want to get Earth-centric)
- Practical Combat (Tactics, Strategy)
- Ethics