Pages like a report or booklet
You can't measure storage size in pages. Or songs, or recording time, or anything like that. The only way to measure storage is in bytes. Therefore there is no answer to your question, unless every "page" is the exact same size.
I'm getting a little more than that on a 256 drive... (about 43000) Basically, if they are going to be doing anything with test, that will be more than adequate...