About half of children between 10 and 12 years old, and one-third of kids aged 7 to 9 engage with other people on social media, according to the University of Michigan Children’s Hospital National Poll on Children’s Health. While the study found that two-thirds of parents are concerned about their children sharing private information through apps, a surprising percentage of parents didn’t monitor their kids’ social media activity. Roughly 40 percent of parents said it was “too time-consuming” to monitor their child’s social media. And one-third said they didn’t use parental controls because the child would just get around them.