That's certainly what I've seen. Friends were appalled when they moved their kid from private to public and saw how much more support she was getting for her dyslexia in the public school. The private school just wasn't interested in doing much about it.

Public school support is uneven though. Some districts are great. Others are just great at seeming busy with services. Some are just bureaucratic nightmares.

The size of public school districts tends to be an advantage when it comes to special ed, IME. A private school isn't going to hire 3 therapists for the one child with autism. Maybe they find someone to come in for a few hours a week at most.

Public school districts can hire full time therapists and send them around to schools as needed. They also have the legal obligations of IEPs and cannot deny services to students without running up against federal law. They tend to have a lot better staff with a lot more training with a lot more hours they can devote to the kids.

But there are private schools specifically for autistic children where the entire staff, and programme is focused on them.

The problem there is choice of private school. There are private schools dedicated to providing those services.

That is a blanket statement and it just isn’t true. There are kids in my kids’ private school that have learning disabilities and our school not only has an on staff psychologist but also works with outside consultants to help on the more difficult cases. The school is extremely supportive. And there are plenty of public schools with abysmal special ed. My point is that such blanket statements aren’t true.

It's broadly true. It's not feasible for private schools to provide special ed services. It costs about 3x as much per student than general ed.

There is a strong incentive to keep special ed populations small or nonexistent at every private school. Both to save money and improve the overall "success" rate of their students.

The other incentive being the general ed students get a better education.

I don't think so. If you want to meaningfully drag down everyone in class then ask lots of pointless questions about minute details. Keep the conversation going for 5 minutes. Then do this three times per class. If you have 3 people like that in your class then expect to learn nothing.

Students with physical disabilities are usually very expensive to accommodate but not stupid or annoying. They might "ruin" their own education but not anyone else's.

How so?

Except that the blanket statement literally is true: public schools are legally responsible for providing education in the least restrictive way to those with an IEP, while private schools are not.