‘School of Rock’ Reunion Concert: Jack Black, Miranda Cosgrove and Kids All Grown Up! (Video)

The cast reassembled to play some licks and let Miranda Cosgrove blow up Instagram

It's been 10 years since Jack Black assembled a group of prep school kids into a kick-ass rock 'n roll band in "School of Rock."

To celebrate, Black and several of the film's children — now all grown up — played a reunion concert. And there's video, albeit brief.

See video: Bill Murray Destroys 'Late Show' Set on 20th Anniversary

Miranda Cosgrove (Summer), Joey Gaydos Jr. (Zack), Robert Tsai (Lawrence), Kevin Alexander Clark (Freddie) and Rebecca Brown (Katie) joined their one-time fictional teacher on stage.

Director Richard Linklater and writer/co-star Mike White were also in attendance. Technically, the 10th anniversary of the film's release will be Oct. 3, but we'll let that slide.

Watch the Instagram video:

And check out some photos of the reunion from Cosgrove's Instagram account: