I've found that kids tend to emulate their parents or role models. The parents should always be the role models but sometimes that doesn't work out. I think that a lot of kids don't achieve because they don't have a positive role model in their life. I had to take my daughter to a probation meeting with the county court and talk to her probation officer. There were a couple other young adults there for their meetings. One young adult had a Cormac McCarthy book and his mother looked horrified and embarrassed that she was there with her son. Another young adult was there with his family and they were having a grand time telling jokes and goofing off like it was just another appointment.
Pretty easy to guess which young adult got their life straightened out. Not every parent wants their kids to achieve more than they've achieved. If a parent mocks a kid or schoolmate that is studious, that makes it tough on their kids to excel.
My mother was very conservative. and always told me: No tattoos, keep your hair short, look straight laced, etc., if you want to make it in the business world. Those rules don't apply much today.
If all the other kids have phones and communicate their social lives that way and your kid has no phone, they can become a social outcast. That's not a good outcome.