"Kes is really about the colossal wastages of kids, whose lives and abilities are written off before they're even in their teens. We chose to make it in Barnsley, we chose a Secondary modern school on a new estate that's becoming shabby. But it could have been one of hundreds of schools or estates. We didn't happen to unearth one child star, there were several kids in that one school who could have done the main part, [Billy Casper]."
January 1, 1970
https://en.wikiquote.org/wiki/Ken_Loach