KINGSPORT — School is back in session and the summer is winding down. But that doesn’t mean you have to give up the swimming pool just yet. Fall is a great time to get into the pools at the Kingsport Aquatic Center and learn how to swim. The classes are smaller, which means more one-on-one time for you or your child with the swim instructors. Registration is now open for fall swim lessons at the KAC.