DC13 has time restrictions on her phone. She's limited to 30 minutes internet, which she generally uses up on memes and websites with free games. She used to have a maths app which was fine as that had a separate limit, but this year their maths is on a website, not an app. The official policy of the school is minimal homework. So, they don't get set homework, and the teacher says if they want to do well, they have to do the practice on the website. Thus the teacher is not breaking the school's minimal homework policy.
I'm not often around when Dd does her homework, last year she would send me a request for more internet time citing she had classwork to finish off and then didn't do it as she got "sidetracked" doing something else. How do you keep sensible restrictions on when they have to have access? And how can I e.g, make sure she can only use it for the maths website?