It's rare that a developer goes from making an adult game about crime with very adult themes, to making a game about a high school kid who moves to a school for child delinquents and socially challenged kids, but in a lot of ways Bully is like a GTA. For example, Bully is a open world with stuff to collect, bike races to do, arcade games to play and much more to just find and explorer. The mission structure is very similar to GTA, you do a bunch of work for one of the factions, like the Jocks or the Nerds, and the more you do with them, the more reputation you gain, which in turn effects how other people treat you around campus.
The combat is also very similar to GTA, but instead of machine guns and rocket lunches, you are playing with slingshots and stink bombs.
There are also lots of things different about Bully that really makes it feel like you are back in high school. It feels very structured, but that's not a bad thing at all. You have classes two times a day everyday until you pass the highest level of that class. All of the classes have their own perks, for instance, completing one class will show you where all of the collectibles are on the map.
Unlike the protagonists in GTA, Jimmy is 15 and needs his sleep, so if you are out past 2AM, you just pass out on the spot which can make some nigh missions feel a little too time restrictive but adds to the challenge.
I did't have any technical issues with Bully like a lot of people complain about on this port. Overall the game is well made but parts of it seem kind of repetitive, but I still think this is a fantastic game. Sadly again, the screenshot function in this game didn't work, but the graphics stand up well for a game made in 2008.