But parents would otherwise be much happier if they didn't listen to other parents. Parents always talk about what their offspring can do, and not about what they cannot; and they exaggerate. You have to ask yourself what has gone wrong if a child genuinely hasn't time to practise in secondary school.
Kids are involved in too many activities IMO. And while I appreciate that parents want to give them the chance to try as much as possible, the end result too many times is they are too busy, and probably don't get good at any of the activities.
This reminds me of a small child I taught many years ago, hope you don't mind me sharing on this post. Mother appeared with a visibly upset, weeping child with wet hair for the trial piano lesson and explained that she was 'just a bit tired' as they'd been (somewhere I can't remember as it was years ago), then swimming and had to rush to the lesson.
Mum then explained to me that it was always her own wish when she was little to play piano and that the next door neighbour's daughter played piano which they could hear drifting across the back garden when the patio doors were open. She said her and the lady next door were "very competitive" and asked me about exams and how soon the (weeping) child would be able to sit them. Cue explanation from me, etc etc.
We agreed on a month's trial to see how the child would get on. They appeared the following week and the mother told me she hadn't done any work nor bought the book I recommended as she didn't want to "put her off". Exams were enquired about again, as well as the possibility of performing at a forthcoming school concert.
At the end of the month's trial (which was more of the kid crying than learning piano) the mother told me that they weren't going to come back as the child thought the lessons were "boring". She said this loudly in the busy waiting room of the music centre I taught in back then, for all to hear.
I suggested to her if she wanted excitement she tried the local skateboarding park or kayaking at the swimming pool.
I've perhaps gone off on a tangent there to the original post, but it's so difficult when you encounter a parent who just doesn't understand the work involved in learning an instrument or working towards grades. Fortunately the majority of parents do understand, but there's always the odd few.