When most of the job is rock breaking then it’s easy to see why the supply of new teachers is so high. Coupled with the romance of wanting to be that inspirational teacher, and the genuine privilege of wanting to work with young people, and it’s not hard to see how schools can get away with murder when it comes to pay.
Money isn’t the worst of it though. Alongside the low salary there’s also a huge risk of employers developing a them/us relationship. The involvement of unions exacerbated this, and schools are already high-rules / low-trust environments even before any of this kind of staff/management internecine conflict.
But: (1) I love working with kids; (2) while the job attracts good people and bad people, the good ones are great.
PS: I’d eat my hat if exactly the same wasn’t also true for police detectives and nurses.