Imo the best type of system for children to grow up in would be one that assumes the birth parents/primary guardians won't do shit and takes care of every aspect of childcare that's essential for their wellbeing and development, collectively.
But I'm just a guy who only learned how to brush his teeth properly and got glasses as a child because we had both a dentist and a doctor come to school on a regular basis. The dentist would have us all stand in a circle with our little toothbrushes and show us how to brush and correct our technique. The doctors would give us general health assessments and then have the teachers contact our patents and essentially peer pressure them into getting us any health intervention we needed. My parents only reluctantly got me glasses because they knew the teachers would judge them if they kept seeing me sit in the very front row and still squint to see the chalkboard. So I'm biased.
The only times I ever remember seeing a dentist or doctor as a child was at school. I'm quite healthy physically and I'm very grateful for all the care I got from the various professionals who cared about my well-being and development more than my actual parents did.
We had free healthcare including dental, mind you, my parents just couldn't be bothered. When my brother, as a teenager, asked our mother if she could take him to his orthodontist appointments (which he'd already arranged for on his own) she basically told him she didn't feel like it and he had to take the bus.
If I could improve anything about that system, I'd take it even further and make it so kids could see a doctor and get meds, treatments, therapy, tests, disability aids etc. without having to rely on their parents as well. I shouldn't have had to put up with being bullied and guilt-tripped about the family finances and the time investment needed to take me to the optometrist every time I needed new glasses.
