Generation Tech

Generation Tech

Phones at school: Less learning, more loneliness

Laptops aren't great either

Jean M. Twenge's avatar
Jean M. Twenge
Feb 23, 2026
∙ Paid

The first evidence we had for the impact of smartphones and social media was for teens’ lives outside of school. Teens were spending less time hanging out with their friends, less time sleeping, and more time on screens, often holed up alone in their bedrooms. That’s not a good formula for mental health, and sure enough, teen depression doubled as smartphones and social media took over after 2012.

But what about during school, where teens spend more than 30 hours a week? Those hours, too, are filled with technology. Sometimes that’s for truly educational purposes – they’re working on an essay for English class, reading a science textbook in an online library, or taking notes in class.

But not always. Even school-issued laptops often allow access to YouTube and streaming (like Netflix, Disney+, and Peacock), allowing students to sit in the back of class and watch endless hours of entertainment. Others play games. Personal smartphones are also a huge distraction: A recent analysis found that American teens spend more than an hour using their phones during the school day, and almost none of that time is spent on educational activities. Instead, teens scroll through social media, watch videos, and play games. Some take videos of their peers without permission, or sneak off to the bathroom to watch TikToks.

Thus, teens are spending about 20% of their time at school not focusing on schoolwork or talking to their peers. That may be one reason why standardized test scores in math, reading, and science have declined since 2012 and why students have increasingly reported feeling lonely at school. Electronic devices are both distracting in the classroom and isolating in the lunchroom. What impact does that have on teens’ learning and on their mental health?

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