Wow. Great debate. Thank you for all the contributions.
Our daughter goes to a wonderful single sex state school which actually has the highest uptake of Maths A'level in the country. Our sons go to the equivalent boys school nearby.
Despite some absolutely sterling efforts (ambassadors, inspirational guest speakers, trips, visits, wonderful teachers in all the subjects at both schools), the A'level choices across both schools largely reflect the gender balance in the graph posted by noblegiraffe - with boys over-represented in computing, physics, maths and economics and girls dominating in drama, sociology and art.
In fact the Boys school is going to allow girls into the sixth form because they have such a low uptake of boys doing languages and art at A'level.
Of course as parents you want your children to follow their own dreams and do what they have a passion for. My DH was "strongly encouraged" by his dad to study sciences. He resented this as a teenager but is glad of it now.
The girls school shared an amazing fact - every science or maths A'level increases your earnings at the age of 30 by 10%. Britain's biggest boom industries have been technology and finance. It's those sectors that have the highest paid jobs.
However we're worried that all our "encouragement" could teeter on the brink of having an impact opposite to the one intended - teenage girls rolling their eyes rather than being inspired. My DH in particular is worried not sounding like his dad with our daughter (13).
Any specific advice for parents?