You don't have to sign the IEP that was presented to you at the meeting. It should be considered a draft until both sides determine it's final and sign it. Have you asked them to add more specific goals and more in class accommodations (the audio textbooks, read alouds of tests, more time for standardized tests, etc)? If not, you should request these, in writing. Did they offer resource room time for R/LA? Make all the requests for changes to the IEP now, before you sign. You could also ask that they add in a comment about potentially revising the IEP in the fall, based on the private eval results and his progress in Sept/Oct. Once you are happy with the IEP, sign it.
IME the school can't make a specific diagnosis. They can only evaluate, and then offer services based on the results of those evaluations, if the child qualifies. That's why the private evals are so critical.
As for the summer, do what you think is best for your son. If you think the private tutor would provide the best support to him and work with your schedule, do that. But, I highly doubt the school will pay for it. I do not think the IEP goals would be affected by your decision, but you should ask your case manager. If you choose not to do ESY this year, you may want to ask them to leave it in the IEP for next year so that you have the option in the future.
Tara
living a crazy life with 3 boys
I am thinking now
of grief, and of getting past it;
I feel my boots
trying to leave the ground,
I feel my heart
pumping hard. I want
to think again of dangerous and noble things.
I want to be light and frolicsome.
I want to be improbable beautiful and afraid of nothing,
as though I had wings.
~Mary Oliver