Private jet, that's not really true. Down to the laziness of school teachers who lower their standards instead of insisting on correct use of English. There was a very interesting series on TV recently 'Back in Time for School', hosted by someone called Sara Cox. Her standard of English was pitiful, as was that of many of the alleged teachers.
As for the pupils, it seems that 'like' is like, used during each piece of like dialogue. Innit...like?