SHAWNEE, Kan. – A Kansas father is not too happy with his local school district after his daughter brought home a picture of a school poster about “oral sex” and “grinding.”

The poster – titled “How do people express their sexual feelings?” – lists numerous types of sexual activities that Hocker Grove Middle School parent Mark Ellis believes are inappropriate for his 13-year-old daughter, Fox news reports.

“It upsets me,” Ellis told the television station. “And again, it goes back to who approved this? You know this had to pass through enough hands that someone should have said, ‘Wait a minute, these are 13-year-old kids, we do not need to be this in-depth with this sexual education type program.”

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The poster offers lots of ways to “express sexual feelings” including anal sex, vaginal intercourse, massage, sexual fantasy, dancing and other options.

“Why would you put it in front of 13-year-old students?” Ellis questioned.

School district officials told the television station the poster is part of a broader “abstinence-based” sexual education curriculum for middle school students.

Leigh Anne Neal, the district’s spokeswoman, said the poster is appropriate, but just looks bad as a stand-alone poster. Other school districts around the country use the same sex ed curriculum, which is aligned with the national standards, so it’s fine, she argued.

Ellis believes the curriculum needs an overhaul, and told Fox he plans on pulling his daughter out of the school’s sex ed classes.

“This has nothing to do with abstinence or sexual reproduction,” he said. “I would like to see that this particular portion of the curriculum is removed from the school.”

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There are undoubtedly many more parents who share Ellis’ concerns but are largely unaware of what their children are being taught about sex in school. That’s why it’s especially important for parents to be vigilant about attending school board meetings, particularly those on curriculum, and to comb through the material their children bring home and utilize online.

The material Ellis discovered in Kansas is relatively mild compared to what students in some other states are subject to.

A New York parent recently discovered student practice quizzes on a state education site with names like “Are you a sexy bitch?” and “Are you a gay whore or what?” State officials claimed the seedy material wasn’t on the site when they linked to it in 2012, but the parent dug deeper to discover XXX material dating back to 2002.