I have seen many Yeshivas (and some not-so-yeshivas [day schools, etc.]) doing a Hoiche Kedusha for Mincha. They had the Chazzan start the first three Brachos of Shemoneh Esrei aloud and say Kedushah, and then everyone would say the Shmone Esrei together. They do this even if they are davening in the middle of he day.
I heard two explanations:
- They don't have time because of Bittul Torah. My objection to this is: come on. They time the break so perfectly they can't give up two minutes to say a lechatchila Chazaras Hashatz?
- There was no enactment of Chazzaras Hashatz in a Yeshiva, since everyone was a Talmid Chochom. My objections to this are: a. Where is a source in the Gemara/Rishonim which distinguishes between a Beis Medrash and a normal Beis Haknesses? and b. How do day-schools, which contain plenty of unlearned people, rely on this hetter?
Does anyone know any real source to this minhag?