with due respect and no annoyance meant to OP, - [ please feel free to delete this comment as thread owner, if you feel offended ]
basic religious training is RESPONSIBILITY of parents, and of MASJID, not of society, not of commercial enterprises, not of neighbourhood. - The Masjid is place which teaches us Aadab of being in crowd. 1st how to be respectful observing sanctity of a place which is full of people of every class, status, color and following.
society or you, me or any individual is not responsible for ISLAM, - Mazhab is from roots and from family., religious education is based on family's faith and school of following. If you plan to open an school based on islamic teachings, please stop.
what if i being a jew wish my child to study at your school ? or I being a 'ahmadi' in your neighborhood want my child to join the school? n what about my SHIA faith - would your school accept only musalman or sunni only ?
educational institutes using "islam" only as selling tool, are harvesting a particular school of thought which in next 15 years time will produce adult iblees lost, with no direction in actual spirit of Quran & Hadith, as current day Taliban.
instead of school you shall name your place - Madarsa - as i can read from your #5.
am also a madarsa gradute of 70s' which became terrorist academy after 1981 and was ultimately demolished in 1997 from within by a motivated student.