“1) Blacks and whites in America now are basically trying to learn the same stuff with the same goals even if surface level vocabulary is different.”
Same with Askenazim and Sephradim – same Torah
“2) Ashkenazin amd Sephardim have different minhagim and they pasken differently.”
So should you separate Ashkenazim that pasken by the Taz vs Shach vs M”A OR separate by modern poskim?
“1) Without having to explain on Pesach what Ashkenazim hold is chametz the Sephardim hold is Matza and rice.”
Total am-haartzus. Rice is not Chametz. The Rema says that the Ashkenazic minhag is not to eat rice, but one can own it and benefit from it. In fact the Rema says that if a little falls into a pot of food, the food is mutar on Pesah, unlike chametz.
I think that most kids can respectfully see other minhagim while keeping their own.
“2) Our Sefer TOrah looks and is held completely differently then theirs.”
Same Torah inside. Beside which, some Sephardim use Sefrei Torah in cloth covers.
“3) Hald the class pronounces the taamim one way the other a different way.”
News flash. The Sephardic way is correct, at least according to an Ashkenazic Rebbe I had, who was a baal dikduk. According to that Rebbe, missing the accent could change the meaning. For example vi-A-hav-TA is the proper accent and not vi-a-HAV-ta (see the taamim). That mispronunciation changes the meaning from future to past, and a person may not be yotzei K’riat Sh’ma.
Actually Ashkenazim used to do it correctly until the Haskala.