That film was relatively new when I was training as a teacher and clips were used as a critique of what was wrong with the education system.
I hope we've got much better with most youngsters, but the basic inequalities are still there, the sense of alienation amongst the most disadvantaged too.
In his Afterword to the 1999 edition, Barry Hines noted that the only significant employment opportunity on Kes's territory, mining, had now been killed off. Today, twelve years later, national youth unemployment figures speak for themselves.