Hm. Well, I didn't notice any major problems that haven't already been mentioned - the big issue would be opacity, telling people how much things cost, and another big thing would be to tell us how much money we're getting at the start of every year - suffice to say, it's a little hard to make plans when you have no idea how much money you're going to get with this year's budget. Might also help to have a handy-dandy 'this is how much your buildings, and whatever else you have at this point, costs you for this year' under the budget tab, so the players don't have to add it up manually.
Since this is an 0.2, it might be a bit crude to mention, but as completeness approaches, an ending a bit more than 'you won the game' would be appreciated, possibly optional endings depending on final stats... Anyway, that's in the future more than anything else, just pointing it out to make sure it's on the table.
Now onto the thing I was actually originally posting to say... this is something I've noticed in all the Hentai High School family. You, as in your character the principal, really don't get anything much. You're always creating this atmosphere of sex and deviance for random mysterious reasons, and... frankly, it looks like everyone in that school except you is getting some.
That always struck me as really wierd, and... eh, I dunno, just seems like it'd help the player's sense of investment in the game a bit if it wasn't always 'a teacher' or 'her boyfriend' who gets to... partake in the delights you are creating... but if every so often you get an opportunity for some studentsex.