Schools have functioned for thousands of years without computers it isn't necessary to have a computer but at the start computers were very expensive just like for example Radio, Televisions, Video's now these gadgets are produced commercially on production lines, the prices have come down drastically to enable almost every nation to afford Computers, take another example the Laptop Computer when they first discovered how to make them you or I could not afford one, now Laptops are cheaper almost everybody has one.
There is no problem with having a Computer at school because Computers are the new way to Educate everyone, our children are being taught to operate computers now so that in the future everyone has knowledge of basic computing.
The problem I think I could arise when governments will start to charge a License fee or receive signals for the use of every Computer very soon, just the same way they did with Radio and then Television.
Therefore, we must realise why they do what they do they will get us all in a corner where we can't dispense with these gadgets and then apply the licence to every household who will have to pay.
Conclusion there is method in their madness. it's yours and everybody elses guess why!