Yes, you can apply for teaching in bengali medium schools. I know a several such teachers who studied under CBSE/ ICSE Boards up to Class XII outside WB and, were appointed as science teachers in a hindi medium schools through SSC selection. There is an example of a teacher who studied in bengali medium school upto H.S. level and, became graduate & postgraduate with a 50-mark hindi paper from Jharkhand, and was appointed as an AT(H/PG) in a hindi medium school through SSC.
