Many churches in South India have started adopting many elements from Hindu temples. Flagpoles (dwajastambham) and lamp pillars (deepastambham) are very common. This church even has a facade resembling a temple gopuram.
My Isthiri wallah also seems to be milking the Entrance Test system. No. He is not offering coaching for JEE or NEET. He has lent his space to display a banner for some material benefit.