All the towns around where my family lives in Normandy have sailing as an option for the sports part of the school curriculum. These are public schools between Courseulles and Arromanches, and there are a bunch of them.
This is of course quite common too on our shores.
An interesting observation fom my years in municipal duty, i.e as the financing body (free sailing courses have been part of the last primary school year -9-10 years old- for 20 years in our village) is the extremely low (kind of 1%) "perseverance" rate.
Extremely few of those exposed remain into the sport. The village racing activities have not progressed,quite to the contrary.
A quick survey around showed that success was only met in places where pre-existed a sail-racing community and in direct proportion to that community standard.
In other words, where sail-racing was part of the local life and very active, exposure at school enlarged the pool of wannabe racers and offered an entry-door to a number of gifted people who would not have stood a chance otherwise.
It raised the standards up as a consequence but, in a more general way, it did not grow the sport in numbers.
The rich became richer !