Celebrity tweets aren’t always models of flawless spelling and grammar? Say it ain’t, er, isn’t so!

Educators at Red Balloon, an English language school in Brazil, recruited students to police celebrity grammar on Twitter and the results are adorable.

Uh oh, Maria. That’s the kind of tweet that incurs the wrath of the Beliebers! But even the Bieber Army won’t deter Maria and her classmates from completing their mission.

School is in session for Sylvester Stallone, Kim Kardashian, Lady Gaga, Rihanna, John Cusack, Ashton Kutcher, Charlie Sheen and other celebs.

https://twitter.com/DanieIRadcIiffe/statuses/160002704310140930

Note: That account is not verified and appears to be fake, but the tweet still makes for a good teachable moment.

Team leader Andrea Baena explains:

We have celebrities that are not really worried about the language. Concerning education, it’s really bad, because when they see their idols speaking like that they come to us and say, “But this is right, he’s American, he’s using it.” And it’s not the case.

The students schooled celebrities in April, but their school is in the media spotlight this week. Here’s a cute video about the program:

“So far no celeb has replied,” according to the video. “Hopefully they’re busy studying English.”

Editor’s note: This post has been updated to explicitly note that the Daniel Radcliffe account is unverified.

Related:

Heh: Second-grade students correct grammar and spelling in NFL players’ tweets