I am also in the process of planning to use NWN2 for educational purposes. My students are Year 10 (14-15 yo) English students and I aim to have up to 20 of them interacting in a campaign world (10 PCs at a time) learning as they go. Due to licensing needs I have restricted my development to NWN2 and not with SoZ or MotB and so I am unable to comment much on your module - it crashes at points and does not support some SoZ textures.
But, for what it's worth...(if any are SoZ related, just ignore them!) None of these are meant to be negative in intent. I could only get to walk around the library. The concept seems to be really good from what I can see and I really hope the kids enjoy learning in this way.
- Add a campaign description (New Campaign screen)
- the opening scene is a bit 'strange' IMO because of the low camera angle and because there is no-one speaking to the PC when they are asked the violence/no violence question
- the librarian is carrying a torch in a lit room (dangerous for books!)

- Oden is carrying an axe - why?
- the lighting effects are 'off' to me. One reason is because lights shine through walls in NWN2 (put torches on outer walls) and because the light is placed on the apex of the torch - move the light slightly ahead of the torch to get a better shadow (or turn off shadows?) I would have some chandaliers with muted light and remove the torches from the inner walls (and the librarian).
- could there be happier/lighter music in the start area? (Grade 1-ers)
- load screens are a good idea but seem out of place to me. Even a border with more of a 'fantasy' feel would lessen this.
- there is a 'rogue' fire effect that should be deleted (near a wall)
Cheers and good luck with your venture.