I honestly think they should interview people who want to study teaching. Teachers are incredibly important, and there are way too many shit teachers out there, or people only studying teaching because that was the only course they could get into (other than arts).
If they were more selective about who became a teacher based on their motivation, I reckon they could really fix the education system. And for fucking god's sake, GET RID OF THOSE TEACHERS THAT HAVE BEEN AROUND FOR 50 YEARS AND HAVE LOST ALL MOTIVATION TO DO ANYTHING. 99% of them are complacent assholes who do NOTHING. I agree that the ones who have been around for ages and haven't lost their drive/motivation are pretty damn good, but the rest of them need to make way for the fresh meet who genuinely give a shit about their students, gosh.