Pakistanis as a society are not ready for a co education system for higher secondary school classes (the period between primary and graduation). There are multiple reasons for this which vary depending on priorities of our state and we people ourselves.
The state of Pakistan is interested in building roads only whereas it has little to no interest in physical well being of its citizen, it has no plans and vision for well being of its citizen, there are no practical steps taken to produce healthy young minds full of bright ideas (very few get lucky to achieve that on their own). The dwindling number of sports facilities / opportunities and deteriorating condition of limited number of public parks, shameful situation of our hockey talent, is a testimony to that fact. These political dynasties, Sardars, Chaudhry and landlords or whatever they are, they never want or wanted healthy open minded educated common Pakistanis.
A young mind can be kept busy with such ventures ......... believe me it would have a lot of positive effect on how we see opposite gender and keep our hormones in control and balance. There is no way our state encourages innovation, research and new ideas. These things get killed at very early stage ....... when the parents start feeding their children "You should become a doctor", "You should become an engineer", "You should become a pilot" .... very little to no attention is paid to "What I want to become" ...... basically the whole education system and related necessary facilities are messed up.
We (majority) as a people portray ourselves as conservatives ...... but in reality we are little insecure perverts. From sick old bastard shopkeepers to sexual predators sitting at high positions, we have sick minds. The very sight of a tight jeans wearing female or a nicker wearing male makes us lose our mind and control, the mentioning of names of our body parts take us wandering into fantasies. A society high on pervert hormones and little to no open mindedness ...... sorry we aren't that strong yet. Our love hormonal imbalance make us kill 17 people ........
The day our boy starts to think of his female class fellow as an equal contributor and productive unit and worry about his strict tight busy schedule including at least two hours physical activity in some form of sport, the day our girl starts thinking beyond I can be married to this boy, and I have to finish my studies for my evening yoga, karate, cycling, exercise session ........ may be that day we can think about it.