All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
There is no religious objection to teaching what is related to bank interest, as the mere teaching of it does not necessitate the approval of usury or consent to it.
However, explain to the students the prohibition of usury and the Sharia's position on it.
Likewise, there is no objection to studying accounting or finance and other disciplines. Therefore, only studying them does not necessitate the approval of usury or consent to it.
Allah Knows Best.