CDC releases new guidance for masks in schools The CDC is urging every school to welcome students back, even if they aren't vaccinated. KTVU's Maureen Naylor reports. OAKLAND, Calif - The CDC issued new guidance Friday for schools, saying among other things that those who are vaccinated can go mask-free. With summer camps in full swing, Jordan Thompson of El Cerrito is looking ahead to fall and ready for her kids to go back to school. "I think that's the worrying part.