Look for AANR (USA), INF (International), or BN (British Naturism) affiliated clubs. Avoid random "nudist" groups online; legitimate organizations have strict child protection policies.
The Davilas implemented a simple rule: "You choose your comfort." When their son turned 14, he abruptly stopped participating. "He would wear jeans to the beach. A shirt in the pool," says Maria, his mother. Family Naturist Stories