11/17/2011 11:42 am ET | Updated Nov 17, 2011

Jeff Spires, Florida Math Teacher, Admits To Selling Grades To Pay Off Debt

Usually, if you want to get a good grade in school, you study harder. According to a report by NBC's WBBH, students in Jeff Spires' math class at Charlotte County High School in Florida had another option--staple some cash to the test.

During an investigation, Spires admitted to taking around $60 dollars from a junior several times, in exchange for giving the student a B instead of a C on a test.

Spires also admitted to improving a senior's quiz grade after the student paid him $15 or $30.

In an investigation, Spires cites financial troubles stemming from previous arrests and jail time as the reasons behind his bribery.

"That's what I don't know -- why," he said, according to the school's report. "Maybe I see the kids as desperate as I am."

On Spires' profile, one student admitted to bribing the teacher.

"Awesome teacher," the comment said. "Bought grade for 10 bucks and a car wash coupon. The coupon was expired but he did not notice."

Other students wrote that they were saddened by the investigation's results.

"Coach Spires is the best math teacher I have ever had," the comment reads. "It's so sad he is being investigated for selling grades. :( I dont think I'll pass that class with out him there to teach, he made everything make so much sense!"

“This is one of the most disturbing events I’ve seen in my 40 years,” Charlotte County Public Schools Superintendent Douglas told WBBH and ABC affiliate WZVN.

Spires was placed on unpaid administrative leave in October, and resigned earlier this month.

Read the report from the investigation: 111115_spires 2