Worst first day of school ever.

A middle school teacher was busted swiping more than $8,200 worth of cutting-edge supplies from the Queens public school where she works — on the eve of the first day of school, police said Thursday.

Sherran Fields, 44, was working at IS 59 in Springfield Gardens Wednesday when she was arrested for allegedly stealing three computer programs used by science students and teachers, according to cops.

Fields, who is an eighth-grade science teacher, was captured on school surveillance video allegedly pilfering the tech supplies, including digital curriculum and workbooks, between 10:20 a.m. and 12:20 p.m. Aug. 21.

Parents were fuming Thursday over the alleged theft.

“It’s very upsetting she stole from our children, it’s not right,” one parent said.

The whole ordeal made the return from summer break even more chaotic, a school administrator said.

“I don’t know what the hell is going on, I can tell you it’s causing chaos in the first day,” he said on condition of anonymity.

Fields “will remain reassigned pending the outcome of this case,” said Department of Education spokeswoman Danielle Filson.“This alleged behavior is completely unacceptable, and we reassigned this teacher away from students when we became aware of the allegation.”

Fields was charged with grand larceny and criminal possession of stolen property, according to police. She was set to be arraigned in Queens criminal court Thursday but instead was taken to a hospital with a “medical issue” she suffered while in custody, prosecutors said.

She has worked at IS 59 since 2006 and has raked in $91,022 so far this year, according to data compiled by the non-profit Empire Center.

She started working for the DOE as a substitute teacher in 2002 and became a full-time teacher at JHS 194 William Carr school in Queens in 2003, according to the DOE.

Additional reporting by Natalie O’Neill and Kevin Sheehan