To clarify: Space Camp didn't begin until Summer of 1982. Space Academy began in June 1984. The movie was filmed in September 1985 (consequently, the same month that Adult Space Academy started).
Now, Space Academy Level II didn't even start until July 1987. So... with that in mind, I would conjecture that the "Level 2" on Kathryn's manual might actually mean "Space Camp Level 2", which would corespond to "Space Academy". But, since people might know the name Space Camp, over Space Academy, that's what they went with for the movie (guess here).
Now, the book does break it down into two weeks, which again is not what Academy was about.
Maybe the movie gave away to the 10-day version of Level II?
