When I briefly looked into this, it appeared that my town's school budget absolutely dwarfs the budget for things like roads, so if the roads are bankrupting us, we're really screwed if we need to somehow fund education. So I'd be a bit wary of taking their claims at face value.
That is often because the roads, sidewalks, etc. aren't actually maintained properly, they do some minimal patchwork and when it gets too bad, they ask the state to bail them out.
Garbage collection is private, so I assume they're charging a fair price. Water/power cover their expenses through monthly bills. Sewer is mostly covered through monthly bills, with a small amount coming from "other sources" which I don't understand.
Lots of nearby homes are 70+ years old, so it's not like it's just that it's new construction and hasn't encountered maintenance costs yet.