I have been assigned to assist at a CCD class this semester. We have a special needs student in our class and it works because his mother comes and helps him stay calm, engaged and involved.
I think, if you were to set up a special needs course, it would have to be either one on one or a main teacher and a TA for every child or every two children.
I think a special needs class is a great idea. I don’t know how you would determine the curriculum or organize the class but if the need is there, it should be met if at all possible.
I would support it.
Another method might be to get TAs or facilitators to assist the special needs children in the classroom with children their own age for most or all of the class and have it set up so that they could learn and have the same classroom experience.
Either way, these kids need to learn about the faith too! I would support any effort to educate children in the faith.