My wife is a teacher, i have no idea how she does it
or college. 
Some other professions may involve a significant amount of teaching (e.g. youth worker, pastor).
In most countries, "formal" teaching of students is usually carried out by paid professional teachers. This article focuses on those who are "employed", as their main role, to teach others in a "formal" education context, such as at a school or other place of "initial" formal education or training.
Duties and functions.
A teacher's role may vary among cultures
also a factor in her decision to leave the Labour Party. She told "The Yorkshire Post":
My stepdaughter Rachel said to me: 'How could they do that to people like David Cameron and his wife Samantha when they had recently lost their son Ivan? What kind of people think it would be a good idea to smear them?' I was sickened by that – that is not the Labour Party that I joined all those years ago. [...] Quite simply I have had it with New Labour