Use this $100 gift card towards swim lessons at FOSS Swim School. Also included is a $35 New Family Fee Waiver. Foss Swim School is a talented and energetic group of professionals dedicated to executing the world's best learn-to-swim program for your family. Since 1993, FOSS has redefined the “swimming lessons” experience for thousands of swimmers by providing a unique, creative, animated, challenging, and remarkably “FOSS” style of teaching.