There are some schools which offer a “halfway house” in that they accept both boys and girls, but teach them separately – at least until the age of 16. Critics of this system argue that this is even more unnatural than the single sex environment. This debate will go on for many years without a resolution and so parental preference is the key factor here.
Coeducational or Single Sex?
More than anything this is down to personal preference.
Those who favour single-sex education often argue that academic results tend to be better without the distractions of the opposite sex; those who favour co-education would not only dispute that assertion, but also argue that their system was a more natural environment in which to be educated for life in the outside world.