I have NC for this.
I am part of the pastoral team of a large secondary school, and I have noticed not just a massive decline in the mental health of young people (and their parents for that matter) but also, from my own perspective, the provision has progressively dwindled. This scares me so much.
I used to love my job and felt that it mattered as I performed a pivotal role in a child's wellbeing, road to recovery, etc. I have done this for almost 9 years with the school having provided zero training for me. Nothing at all. I have made it my business to educate myself, and this has been at my own cost and in my own time. In those 9 years I have dealt with more and more complex cases, including attempted suicides, and I still have not received any training, or support for myself for that matter.
I am not sure how much parents are aware that many of the pastoral members that look after your child's mental health are not trained at all. They're just people like you and me who probably got a lowly paid job at a school in order to work term time only.
What I am hearing now pretty much on a daily bases is parents asking school to provide interventions because their GP has said 'school will put something in place'. I don't know about other schools, but where I work, this means that very complex cases (neurodiversity, suicidal ideation, eating disorders, self harm, potential mental health disorders, etc), get shoved towards a member of the pastoral team who's meant to make a difference to that child's wellbeing, having had zero training, and having to balance the demands placed upon them from other aspects of school that get prioritised over mental health EVERY TIME: attendance, uniform, detentions, and general compliance.
I am not sure how much parents realise that schools are not always honest about the fact that they do not have qualified staff to deal with most emerging mental health difficulties. Quite often we have children joining in Year 7 with a history of mental health difficulties, and parents expect school to deploy a whole host of interventions. Whilst I believe that schools are ideally placed to deal with the mental health difficulties of our young people, this is simply not the reality because there's no funding and no training is allocated to non-teaching staff . The result is that our young people deteriorate, and the adults being paid nearly minimum wage for addressing these difficulties are on constant burnout mode, often developing mental health issues themselves.
The difficulty for parents of course is the fact that when they take their child to the GP, they learn that CAMHS' waiting list is 2 to 3 years, and then get reassured by the GP that 'school will put something in place'. Parents out there, you want to question schools as to what qualifications the person looking after your child's mental health has. What the interventions that schools put in place really mean. Their frequency, consistency, are they evidence based... Don't be fobbed off. Make sure they're not just paying lip service, because from where I am standing, that's all that's on offer right now.