More emphasis should be placed on warning boys to control their sexual urges in order to reduce pregnancies among teenage girls, the politician in charge of Birmingham schools has suggested.
Les Lawrence said too much time was taken up by schools telling young women to act responsibly, while boys were largely left alone and not given the same level of advice.
Coun Lawrence (Con Northfield), cabinet member for education and lifelong learning, said: "One of the things that worries me about sex education at the moment is that it is over-concentrated on the role of young women.
"One of the easiest ways to cut teenage pregnancies is to get young boys to say no.
"If they could control themselves and control their hormones the problem would be largely eradicated."
Coun Lawrence's remarks were delivered during a cabinet discussion on the Birmingham Children and Young People's Plan, a statutory document setting out the way the council intends to improve lifestyles for children over the next three years.
The 75-page plan pledges to turn Birmingham into an "inspiring place where all children can enjoy living, learning, developing and achieving together".
One of the priorities is to reduce the number of teenage pregnancies by improving access to contraception and birth control advice in "youth-friendly settings".
The document also sets out strategies to help an estimated 60,000 overweight or clinically obese children. The council has signed up to the Government's healthy schools programme, which seeks to increase the amount of classroom time spent on PE and games lessons.
There will be fresh emphasis on developing healthy eating policies. Children are to be encouraged to follow a better diet and to take more physical exercise.
The plan was criticised by Alan Rudge, cabinet member for equalities and human resources, who warned that the council could be in danger of developing a cumbersome inspection system under which schools would be encouraged to spend a lot of time "ticking boxes" on forms.
Coun Rudge (Con Sutton Vesey) said: "The danger is that we are spending millions of pounds on developing another talking shop.
"Parents have a major role in giving advice about health to their children and that responsibility should not be abrogated by someone else."
However, Coun Rudge said he fully supported attempts to get school children to spend more time on the sports field.
"I have fought for years against the politically correct crass idea that children shouldn't even run against each other on sports days."
Coun Lawrence said: "This is not about ticking boxes or a lot of people going round patronisingly telling people what to do. This does not take the responsibility for their own lives away from people."