Tony Rose wrote a parody of this to use as his leaving 'speech' when he quit teaching. It was both personal to the school he was leaving and universal to the state of English schools at the time. He called it 'English Country Classroom'. The hook line was 'let the teachers teach ' , which was the NAS/UWT slogan at the time. I wish I'd had the foresight to record it and/or ask him for a copy. I know he took a lot of care with it since he updated me on its progress every few days 'got the last verse now, this is going to upset a few people, he he..' Tony had a great sense of humour, as I'm sure many of you know.
I suppose Laura might have a copy of it, she posts here occasionally.