What a Survey of High Schoolers Reveals About Short-Form Video, Attention Span, and Grades
Last month, I stayed after school sorting through 127 anonymous surveys I passed out to my three 11th grade English classes. The district’s copy machine left streaky blue ink down the edge of half the pages, my morning coffee had gone lukewarm, and I had a half-eaten peanut butter granola bar propped next to the stack. I’d grown frustrated over the semester watching kids flip to a blank Google Doc for an in-class essay, then 90 seconds later be scrolling Reels while pretending to brainstorm. I didn’t want to just rely on my frustrated gut feeling—I wanted to hear what the kids themselves had to say about TikTok, their focus, and their grades.
The numbers lined up with what I’d suspected, but they were starker than I expected. 82% of respondents said they check short-form video at least once every 15 minutes while doing homework. 68% said they can’t make it through a 10-page textbook chapter without reaching for their phone. When I cross-referened self-reported daily scroll time with self-reported GPA, kids who spent more than four hours a day on TikTok, Reels, or Shorts outside of school had an average GPA 0.8 points lower than kids who spent less than one hour a day. Most striking to me was that 69% of the kids volunteered that they think scrolling directly hurts their ability to do well in school. It’s not that they don’t know it’s a problem—they just don’t know what to do about it.
A week after I finished compiling the results, Javi, a quiet kid who sits in the front row, stayed after class to talk about his last essay grade. He’d pulled a C+ after getting consistent B+ and A- through the first half of the year, and he was frustrated. When I asked what had shifted, he pulled out his phone and showed me his screen time report: 6.2 hours a day on average, five of that on TikTok. “I’ll get stuck on a calc problem, and I tell myself I’m just checking one meme,” he said, kicking the base of my desk. “Next thing I know, 25 minutes is gone and I’m too tired to go back to work. I used to be able to read a whole novel in a weekend for fun, now I can’t get through three pages of history homework without my hand reaching for my pocket. Everything feels too slow after that.”
I hear this from parents all the time, too. The most common advice floating around is just “take away their phone,” but that’s not realistic for most families. Most kids need phones to get in touch with parents after school, to use study apps, even to collaborate on group projects. Banning short-form entirely doesn’t work either; 12% of my survey respondents said they use TikTok to study—looking up chemistry mnemonics, essay writing tips, or recaps of the books they’re supposed to read. It’s not all useless, and it’s a primary way a lot of these kids stay connected to their friends when they’re busy with homework and after-school jobs.
What’s actually happening, that the survey makes clear, is that short-form video trains the brain to expect constant, immediate rewards. That doesn’t mean kids can’t focus at all—it means the slow, unglamorous work of school—solving a page of algebra problems, writing a rough draft, memorizing vocabulary—feels unbearably boring by comparison. It’s not a moral failure, it’s a brain adaptation.
The small, concrete changes I’ve started sharing with parents and kids, based on what’s actually worked for people I know, don’t require a full household overhaul. First, separate scrolling from homework. Instead of letting kids keep their phone next to them while they work, set up a designated “phone spot” in another room—on the kitchen counter, or the hall table—during 2-hour homework blocks. If they need their phone for a study app, turn off all social media notifications, use the built-in screen time lock to block access during set hours, or even temporarily delete the TikTok/Reels app (it takes 30 seconds to redownload after homework is done).
One mom I know made a simple deal with her 10th grader: 25 minutes of uninterrupted homework earns 10 minutes of intentional scrolling, after the entire work block is done. Instead of sneaking scroll breaks while they work, all scrolling happens after focused work, which takes away the guilt and the constant pull to check for new content. It’s not perfect, but she told me her kid’s homework time went from 3 hours of on-and-off distraction to an hour and a half of focused work, with more time left over for scrolling anyway, even with the limit.
A month after Javi and I talked, he tried the phone parking spot thing. He leaves his phone in his locker during after-school study hall, and only checks it when he’s done. He got a B- on his last math test, a big improvement from the D he got the month before, but he still slips up. Some weekends he scrolls for 7 hours straight and doesn’t get any homework done until Sunday night. This stuff isn’t something you fix once and it’s done.
The survey didn’t give me a neat answer about whether short-form video is destroying a generation, or if it’s all fine and we’re overreacting. It just told us what kids are already living: it’s fun, it’s useful sometimes, but it changes how you show up for the slow, hard work of high school. And the solution isn’t to panic, it’s to build small boundaries that work for you, one homework block at a time.
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