As a full-time teacher, your experience is largely contingent on the school and the amount of support you receive. I was a new teacher at a rougher school and received very minimal support.
I had one grade six class of 30 kids in which half of them had SEVERE behavioural issues and were operating at a grade one/two level. It was impossible to actually teach, and the academic progress of the other, "normal"-functioning students suffered immensely.
The integration of special needs children into "regular" classrooms does NOT work and is an all-around gong-show. It is a FAILED experiment, is not backed by any evidence whatsoever, and should be scrapped immediately. The only people it hurts are all of the students involved.
I had a permanent, full-time teaching position and quit after only a year, as I felt I was operating in a structurally defunct system, and my mental health was on the brink of collapse. It is the best decision I have ever made.
Stable career, great pension
Very little work-life balance, extremely draining, impossibly demanding on many levels