Most Yeshivas do not have resource rooms. Special Ed teachers cost money and have to be specially trained. They barely pay their own regular teachers. They are not going to pay for a Special Ed teacher.
Those classes need to be smaller which also costs money.
And its not a matter of you get what you pay for, very few people can afford $50,000 tutions even if you have a really good job.
I dont think Darechi takes special ed Students, however there is a program in the 5 towns Far Rockaway called Cahal that does and they place students in various schools in the area. They might have a class at Darchei