A nationwide survey conducted in Australia has found that the rise in binge drinking among high school girls is driving an increase in unwanted teen sex.
The survey showed a massive 60 per cent of year 12 girls, and nearly one in three year 10 females, admitted to binge drinking three or more times in the fortnight before last year's poll.
The Australian Research Centre in Sex, Health and Society at La Trobe University, conducted the survey and found binge drinking among year 12 girls had more than doubled since a similar survey four years ago.
"When they're under the influence of alcohol - the fact that they are having more sexual partners - then, of course, we'll be concerned about whether they're having safe sex," she said.
Of the nearly 3000 male and female students surveyed, a quarter of the year 10s and half of the year 12s said they had had sex.
Thirty per cent reported having three or more sexual partners - up from 20 per cent in 2002. And 38 per cent of the young women said they had endured unwanted sex.
Researcher Professor Anthony Smith described the increase in unwanted sex as significant.
"The most common reason was pressure from a partner and the next was being drunk," he said.
Family Planning Queensland education services director Cecelia Gore said the research highlighted the lack of appropriate sex education delivered to high school students, particularly young men.
She said the real issue was a culture where vulnerability was being taken advantage of.
"We need to be focusing on educating young men about safe and respectful relationships," she said.
Gore said feedback indicated most high school students were unimpressed with sex education classes.
"Whenever you ask young people, they say it is too late, too little and it's too biological," she said.
"The best sex education is when you give people a chance to actually talk about their real life issues," she added.