There’s a warning teachers have been sounding for a while now: something is wrong with literacy in our schools. Students who can’t read at grade level. Students who struggle to write a complete sentence. And increasingly, teachers who are reaching a breaking point trying to explain what they’re seeing in real time.

The latest voice in that chorus is a teacher going by @DariusCooks, whose emotional video, recorded during a lunch break, still visibly shaken, has struck a nerve online.

In the video, the teacher explains that he’d just finished a three-hour block period with his senior class, students who, in a matter of months, are expected to walk across a graduation stage and head off to college. The assignment wasn’t complicated: two paragraphs to read, one sentence to complete using a fill-in-the-blank sentence stem. He’d modeled the answer for them. They’d annotated the text together, as a class. He’d essentially handed them the response before they even attempted it.

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And still, by his account, his 17- and 18-year-old students weren’t able to complete four words on their own.

That moment, just two days into the new year, is what broke his composure on camera. He described watching students who are fully capable of reasoning and defending a position verbally, in conversation with friends, hit a wall the moment that same skill needed to show up in writing.

In the teacher’s caption accompanying the video, he said he’d debated whether to post it at all, but ultimately felt “something is broken somewhere” and needed to say so publicly.

He was also direct about who he sees most affected: young Black and Brown boys and girls, disproportionately present in the students he describes struggling the most.

There’s a much larger ongoing conversation among educators about what’s driving the literacy gap. Is it the aftermath of pandemic-era learning loss? The pull of short-form video and shrinking attention spans? Overreliance on AI tools that do the thinking, and now, increasingly, the writing, for students before they’ve built the underlying skill?

Most teachers sounding the alarm admit they don’t have a single answer. What they do have is a growing list of moments like this one, playing out in classrooms across the country.