These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Alternative Character Interpretation: At least one reviewer has pointed out that Snowdrop's teacher is kind of a jerk. She singles out one of her students and when he fails to find the answer it makes him look stupid. Similarly, Snowdrop not having a partner is partly her fault as well, because she should have known that Snowdrop would have had trouble with such a large project and assigned her a partner to help.
Snowdrop's apparent uselessness, as told by the other ponies is not much in evidence. What we're shown is nearly the opposite: Snowdrop has apparently been procrastinating on a project that most of the class is already done with, and when asked about it, she lies to the teacher that she's working on it rather than asking for help. She doesn't actually do it until the night before. In short, she doesn't really take any initiative in trying to finish the project until the very last minute. This leads some to speculate that her "uselessness" is a result of her own inaction and she's complaining about being lazy.
Fanon: The short uses the common depiction of a younger Princess Celestia having all-pink hair rather than multicolored.
Jerkass Has a Point: As a result of the Alternate Character Interpretation above. While Snowdrop's classmates are jerks, if Snowdrop puts the same effort into group projects that she does on her solo project (i.e. procrastinating and not asking for help when she clearly needs it), one can't really blame them for not wanting to work on a group project with her.
Memetic Mutation: Minor one, but some genius took the film and made this beauty. I fucking love Tenacious D.