What ever the official policy is, girls use their phones whenever they want outside of class time. Older girls, will even conceal and use them during class. More importantly, whenever a class calls for laptops to be used, which is often, a quarter of the class is playing video games during class. It might seem odd, but the reality is that the school's ethos is to treat them as adults from day one. If a student doesn't want to pay attention, then that's her decision and she'll deal with the consequences. At first, I felt uneasy about it, but now I embrace it. You take responsibility for your studies, not the teacher or parents. It's a great place for some, but for those that need hand-holding and close monitoring, it's the wrong place.