High school teacher sings cringeworthy songs to her students on day one

A very trendy high school maths teacher in Michigan has kicked off the school year with a cringeworthy medley of the latest pop songs, reimagined using lyrics about her classroom's rules.
In the video, posted to Reddit, her students look mostly unimpressed as she sings her remixed versions of Carrie Underwood's 'Before He Cheats' - used as a warning against cheating on tests - and Drake's 'Hotline Bling' - turned into a jam about not texting in class.
"I know when that hotline bling, the office gonna get that thing," she sings.
See some of her performance in the video above.