We use out iPads in many ways - not to play games n class time.
Eg:
camera/video - to act out and retell stories
animation/movie editing software - topic work, literacy, green screen work
coding and control - Logo, Kodable, Beebot
simulations - what if scenarios, linked to topic, etc
art - various apps using brush techniques, exploring online galleries, photography editing
d&t - build and make apps, simulation apps
research - instant internet access; specific apps for some topics (space, online webcams to look at safari park, etc); ancestry software for family tree work
music - explore different instruments, mix music, add voice, record and playback, add video element
e-reader - iBooks and Kindle apps, Comic app, First News
phonics - Twinkl phonics suite, Pocket phonics, etc
numeracy - various for specific areas, also online dice, number generators, 100 squares, etc
purple mash - now optimised for tablets
QR reader - to communicate learning with other pupils and parents
etc.
Never are they used to just play games.
They are timetabled in, planned for and used to support teaching and learning by pupils.
They can be an excellent tool when used correctly and have had a big impact in our school since we introduced them last year. Pupil become very engaged when using them. We never have a problem with them playing games or going off task.
We use them in EYFS - Y2 (infant school here) and all our feedback from staff, parents, pupils, and inspectors (LEA, curriculum advisors, etc) has been nothing but positive.
If some children are using tablets too much at home then that is for parents to control and limit. Shouldn't mean schools should limit their effective use of technology just because some parents don't limit game play at home.