Swim Class Ratio Audit Card

👁️ Count What You Actually See

• Count the children in the water, not the ones enrolled. A class listed as “up to 4” can run at 6 when make-up students are added.
• Count adults in the water separately from adults on the deck. An assistant handing out toys is not a second teacher.
• Ask whether a lifeguard is on duty who is not teaching. An instructor watching their own class is not scanning the whole pool.
• Check how many classes share the pool at once. Three 4:1 classes in one small pool is twelve children in one body of water.
• Watch where the waiting children are. If they sit on a step or wall while one child is worked with, that is the moment that matters.
• Note the water depth. The same ratio is a different risk when non-swimmers cannot stand up.

📏 Benchmarks to Compare Against

These are published program standards and common practice — not legal limits. Use them as a yardstick when a school quotes you a number.

⚖️ What the Rules Do — and Do Not — Cover

• There is no federal law setting swim lesson class sizes. The CDC's Model Aquatic Health Code is voluntary guidance states and counties may adopt fully, partly, or not at all.
• Where ratios are regulated, it is usually lifeguards-to-bathers, not instructors-to-students. Those two numbers answer different questions.
• Some states set aquatic ratios for licensed child care and camps, not swim schools. A day camp may face a legal ratio your neighborhood swim school does not.
• Health-department inspection is usually about water chemistry and facilities. A clean inspection report says nothing about class size.
• Instructor certification may not be required either. In some states no credential is legally needed to teach a child to swim for money.
• Rules vary by state, county, and facility type. Your local health department can tell you what applies where you live.

❓ Four Questions for the Front Desk

• “What is the maximum number of children in this class, and how often do you hit it?” Ask for the cap and the typical.
• “Is there a lifeguard on duty who is not also teaching?” You want a yes or a no, not a description of the staff.
• “What are the other children doing while the instructor works with one?” The answer should name a specific, safe holding position.
• “What certifications does my child's instructor hold, and who verifies them?” Ask for the name of the certifying body.

🚩 Red Flags Worth Walking Away From

• The school will not state a maximum class size. A program confident in its ratio publishes it.
• The advertised ratio and the class you watched do not match. Trust the count, not the website.
• Non-swimmers are in deep water in a large group. This is the highest-risk combination on a pool deck.
• Nobody is scanning the water except the person teaching. Teaching and lifeguarding are different jobs done with different eyes.
• Your question about ratio is treated as an insult. Good schools answer it in one sentence and move on.