It's a useful skill, the CDC says about 10 people die each day from drowning. Children and minorities are the most at risk.
The City of Rochester says the majority of their students are minority kids. This year, 325 children signed up for lessons.
The summer sessions are offered at the Genesee Valley, Avenue D, Flint Street and Adams Street pools. As well as at East, Frederick Douglas and Wilson Foundation High Schools.
The classes are offered year round. However, the city is no long accepting applications for the current session.
As well as children, the city also provides free classes for adults.
City residents take precedence, but if there is space children and adults from the suburbs can also sign up for the classes.
To sign up, either visit the pool nearest you or call the city at (585) 428-7456.