More than 300 teachers in Queensland, Australia are under investigation for inappropriate behaviour, reported Australian news website, news.com.au.
It said documents obtained from another Australian paper, The Courier-Mail, revealed that almost all 26 teachers who had their registrations suspended or cancelled in the past year were cited for sexual misconduct.
The report gave a few examples of misdemeanours conducted by male teachers, where one pre-school teacher allegedly got his students to strip naked and paint each other while he took photos. He was previously investigated for molesting young children.
Another had a threesome with students in the back seat of his car after taking them to the Gay Pride march.
One teacher did naked cartwheels in front of 12 year-old students on a school camp and entered their tents dressed in women's underwear, said news.com.au.
The teacher was eventually convicted of raping a 13-year-old girl at a Brisbane private school.
The online paper also quoted the Queensland College of Teachers' director, John Ryan as saying some sexual predators were 'flying under the radar'.
Another issue highlighted was how teachers who had a history of improper behaviour had managed to slip through the net and allowed to be re-hired by schools.
A statement from Queensland's Department of Education and Training said it is working to "close the gap" and the department now "has greater access to information regarding the backgrounds of prospective teachers."