PARKE COUNTY, Ind. – An Indiana teacher was arrested and thrown in the clink for allegedly stealing money from her school and teachers union over the last three years.

Melissa McMullen, 38, was booked into Parke County Jail on four counts of theft and one count of forgery after a months-long state police investigation found she allegedly stole about $2,500 from fundraisers at Montezuma Elementary School where she worked between September and December 2013, The Indy Channel reports.

Authorities also allege McMullen swindled more than $75,000 from the Southwest Parke Education Association while serving as union president between September 2011 and December 2013, though she has reportedly repaid those funds, according to the news site.

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School officials contacted the state police about the missing money in January, and McMullen turned herself in to police Wednesday.

This type of case isn’t uncommon, at all.

It’s made possible by the lax oversight policies and concentrated power structure of teachers unions. In most cases, union dues are funneled through one or two individuals in each local union, and there’s little supervision from state and national union leaders over the finances of local affiliates.

Each new school year brings another round of union embezzlement cases, typically involving tens or hundreds of thousands in dues money, paid by rank-and-file teachers, that is squandered away on personal luxuries for union leaders.

And each year the leaders of the National Education Association and the American Federation of Teachers look the other way.