French schools to ban mobile phones

Apparently, French schools are banning mobile phones on school property, it been shown that this improves performance by 6%,

I think employers should be allowed to do the same, they have got out of hand, I see shop  staff not serving customers because they are on the phone, I have seen nurses busy on Facebook while patients are waiting, I get we need smartphones, they are much more than phones, but its got out of hand