No, not nit picking at all. And I am not the only one that is attempting to get you to say what you mean, or to accurately term educational environments. The Deaf have picked up on it, as well.
So, when was the last time that you spent the day at CSDF? Which classes did you observe? Which extra curricular activities did you observe. How many days did you do observation?
You keep telling people what CSDF does and doesn't you, yet you have virtually no personal experience with the school, or with deaf schools at all. Your child is mainstreamed, remember? The OP has more experience with CSDF than you do. And, as a parent just starting out in the educational system, she deserves accurate information.