As Michigan schools roll out new limits on phone use, educators and researchers are raising concerns about how social media and excessive screen time can affect students’ focus and well-being—and whether new safeguards from Big Tech will go far enough.

At the end of August, Meta agreed to improve safety for its young users and pay a staggering $17.1 billion settlement following a landmark federal trial over children’s online safety, the largest since Big Tobacco paid $200 billion in the ‘90s. Four states, representing 47 states across the country, alleged that the social media giant collected data on kids under 13 and intentionally designed its platform to be addictive for young users.

It’s a major development in the battle for kids’ online safety against Big Tech, but surely far from the last.

“We’re at a point where companies like Meta have had 20 years to make their platforms safe,” said Katie Paul, director of the Tech Transparency Project. “They have proven time and again that regardless of what they state in their policies, that is not playing out in reality.”

As kids head back to school in Michigan, parents, teachers, and state legislators are keenly aware of the risks associated with these platforms. Legislators, for their part, have enacted a statewide law this year that requires students to put their cell phones away during instructional time.

“These extreme measures are only being taken by policymakers because the companies have not taken the measures themselves and done anything meaningful in terms of actually protecting children,” Paul said.