You are not getting it, school districts post the percentage of their students receiving regents diplomas as that is an indication of how well the students perform. The different diplomas are to recognize that while a student did not perform up to the criteria needed on the various regents examinations, the student did pass the required course work as set forth by the individual high school.
The point made by both myself and Double Trouble is that the Deaf school in our area is academically inferior to our local public schools. We each have experience and knowledge of the school and in DT's personal experience from family members. You do not know the school, our children or the schools we are comparing the Deaf school to, yet you persist in arguing this issue.
But then, what else would you do if not argue every point?