You managed to lose my interest immediately by proudly declaring your story doesn't have a plot.
Still, your writing is above average for the 'school based' genre, which until the recent contest was pretty much a cancer on the site. Though you do sort of fall into the common CYOA trap of starting every sentence with 'You'. They'll be much more interesting if you mix them up a little.
There are a few grammatical issues, weird phrasing here and there, and a persistent problem with the punctuation in your dialogue. I'd recommend Googling the grammarly handbook and brushing up on that.
Watch those exclamation points!!!! and question marks ???? as well, you're keyboard appears to get stuck on those and it is very annoying.