So, you're in a school where you can't bring in bags and go through a metal detector. Obviously a fear of weapons.
Means they assume the students are probably likely to bring in weapons.
You get paid for being good. Clearly this is just an incentive to be good. The students here are obviously not good people.
But you can get in trouble really easy. They have a zero-tolerance policy to bad behaviour. They're trying to teach it out of the students.
You get regular field trips. It sounds like it's easier to just ship the kids off somewhere where they can prat about and waste away their energy for a few hours, rather than throwing tables in classrooms.
There are only 50 students in the school, meaning it gets special funding to look after those students. The staff there focus all their combined attention on just a few students, meaning those students require a lot of additional attention.
They provide you all with free food. Partly because you obviously can't bring in your own food, since you can't bring a bag for fear of smuggling in weapons. They have the money to provide everyone with food, so they must be funded for the 'project' that this school runs.
You claim you were sent there for hurting someone.
You were actively avoiding mentioning even this, and were reluctant to share any information.
You claim that you were sent here for throwing a stone at a person. A pretty thuggish thing to do by any standards. Something most people are taught and learn not to do at an early age.
You were eager to say this and nothing more so people would drop the subject.
I reckon that this is just the last incident on a long list of incidents. You probably believe that was why you were sent here, hence you acting like it's entirely unfair.
Children do stupid things and they do fight with each other. Some children do throw things too. They don't tend to get expelled and sent to a specialised school.
You're a problem student, and a bully, aren't you, Bloukface?
This isn't the first thing you've done, I'm sure of it. You're at this school because it's the last resort. You've been dumped at the one place where they can spend the time and money to keep you occupied for the day, to stop you disrupting actual students and fighting other children.
You're not at some special school for idiots, although there's probably a fair few there.
You're at a naughty boy's school.
For children who can't be kept elsewhere.