The document discusses different schools of thought for responding to a 2C opener in bridge. School 1 uses natural bids, with 2NT showing 0-7 points and suit bids showing 8+ points. School 2 uses transfers similar to NT opens. School 3 uses Kokish relays, where 2D is waiting, 2H shows <3 points, other bids describe the responder's suit. The opener can further describe their hand, and the responder can use transfers, stayman, or ask for cue bids.