Another teacher, who did not wish to be named, is a qualified modern studies teacher who has been on the supply list for nine-and-a-half years.
He said his situation became so bad that he got into £50,000 of debt and tried to take his own life last year.
"I have been working contract to contract," he said. "It has been so stressful, and has left me with bills I have been unable to pay.
"I have wracked up £50,000 in debt and almost had to file for bankruptcy in April last year."
He said that on two occasions he was told he had been successful in job interviews, only to then receive emails from the council saying they had decided to fill the post using a probationer instead.
"The council do this to save money as the government pays for probationers," he said.
"It means it leaves people like me unable to secure work.
"I got myself in such a bad place last year I tried to take my own life.
"I'm lucky I have a partner that has helped me battle these demons, but I never thought a vocation - something I love - would push me to this."

