Hello,
as new player who completed tutorial exams, I have some suggestions, firstly I want to say that difficulty is right, I didn't have much problems except one --> time.
Suggestions for demasting and boarding exams:
prolong battle time from 10m to 15m
Exams tell you how to control ship and how to fight, BUT they don't tell you things about crafting, building resource buildings, trading.
To this day I don't know how to craft, what to produce and everything about economy.
So suggestion is to add "economy" section into tutorial, which tells you about crafting, building, producing, trading, etc..