I'll try and give as much info as possible.
I live on a quiet ish side street, it's just off a slightly busier but much bigger suburban road. There are houses with driveways for 2/3 cars but in between the drives are spaces on the road for cars to park, this is on both our road and the bigger one. Never any problem getting a place to park as like I say it's quiet.
Everyday a minibus parks on our road right on the corner with the bigger road. There is a tree which obscures the vision a bit and due to how it's parked cars coming onto our road have to enter on the wrong side of the road, this has led to a few near misses that I've seen. The worst is that a lot of school kids ride bikes home from school along it and as it's quiet ride 2/3 a breast.
The minibus tends to go off about 8am, back just after 9, off again about 2 and back about 4. Sometimes it has the name of a local pre prep school on but the sign must be removable as it's not always on it. I assume it's doing some sort of before/after school pick ups for the school.
Aibu to email the school and ask them to park it further away from the corner as it's dangerous? I'm sure it's much too close to the corner to be legal.