M.R.
No, it is hard to get them in! Schools are pleased as punch to kick them out because it saves them money. They are grinch gate keepers who will likely not give your son as much as he needs, will resist serving him at all, and you may find yourself in a no mans zone with no preschool you can afford being willing to take him, but the school refusing services because he is not disabled enough!
If he needs to be in PPCD, he won't make it in preschool, or the preschool will be asking you to hire an aide, or you will see that preschools for kids with disablities are thousands of dollars per month. PPCD is there for kids who need an IEP, and if his ECI therapists are recomeding it, you should take it. I promise you, the goal is to get him ready to be put into a regular kindergarten class because it costs much, much, less and that would be something called the least restrictive enviornment.
If your son is only recieving therapy from ECI, you need to know that they have a very low standard. Not that they are bad, just that they opperate under IDEA, and once he moves on to PPCD he will also be covered by IDEA, and all the school and ECI is required to do is to make him functional. You want to maximize his potential. If you Have not invested in a full Developmental Evaluation of your son, you should get one, and start all the therapies that are recomended in addition to what he gets through the state.
If you can get him into PPCD, and a therapist who works for the state said he needs it, send him. Get private therapy and a full evaluation, and take advantage of his young age, and maximize his potential. You will not be sorry you did.
M.