"A player spends 80% of his time outside of the club's supervision and only 20% inside of the club, " continued the Frenchman.

CNN: February 1, 2013 -- Updated 1239 GMT (2039 HKT)

Even with teacher supervision, obscenities can't be avoided, and are sometimes hidden inside other words, advocates argue.

CNN: Debate rages over bill to restrict 'Net smut