Hi Dolos!
Elsewhere Adults are automatically granted 32 levels to distribute across Charms/Divination/Transfiguration/Conjuring&Summoning. Each term, they can also earn levels in other ways, the two most common being:
- Personal threads (maximum of two levels)
- Passing an Institution (one level per Institution)
The complete levelling form can be found
here, it lists all the ways you can earn levels as an Elsewhere Adult.
Valedictorian and Salutatorian are specific to the castle, and are awarded to the top scoring students in each class. Valedictorians earn another magical level (for core classes) or another half-level (for electives). Salutatorians are awarded 10 house points. More details on the grading system can be found
here.
I hope this helps! If you've got any more questions, feel free to PM me. c: