The clip, which was shown at Friday’s graduation ceremony in the Hamm-based private school’s auditorium, shows some of the 23 graduating students performing to camera to the Carly Rae Jepsen song in 2012.

It closed what was a moving ceremony in which students were urged to believe in themselves. “You have already got this far and you deserve it. Believe it because you are going places and you can change the world if you want to,” board of governors chairman Chris Cheesman said.

The students hope to take up places at different universities in the UK.