The JMSS System and Why it Works: Our teaching philosophy at JMSS is each child is different and each child learns at their own pace. Every class level is integrally related to the previous level and the following level. Certain skills are emphasized at each level and swimmers can progress from one class level to the next when they are able to correctly perform a skill (check out your child's current skills in the parent portal for detailed information on each student). In order for a child to pass a skill, they must demonstrate the skill consistently, comfortably and confidently. Then the deck supervisor is called over to review the same skill before it is checked off as completed.