A teacher at work. Credit:Stocksy

A new graduate teacher at a Sydney school says she "cried every day for the first four weeks" of the term and has received very little support, in what a university head has described as "the tip of the iceberg" in terms of what early-career teachers face.

"I work 65 to 70 hours a week easily and get paid for 35 hours," said the Kindergarten teacher, who wanted to remain anonymous.

"Ever since I have started, I have been expected to do what a teacher with five-plus years of experience can do, and in the same amount of time.

"I don't have any human interaction outside school hours. I get home, eat, work and sleep. On the weekend I work, do laundry and pack my lunches. That's all I have time for."