Author and Northeastern University professor Alice Dreger has garnered national attention after covering a pro-abstinence lecture at her son’s high school on Wednesday, which led to her being banned from the school.

Mashable reported that Dreger’s son invited her to sit in on the lecture at East Lansing High in Michigan. She began “live-tweeting” the class after finding an area with wifi access:

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I can't stand this. They're teaching "abstinence stories" that worked and non-abstinence" stories that "led to consequences." — Alice Dreger (@AliceDreger) April 15, 2015

When her son shared information from the sex-ed group Advocates for Youth, Dreger wrote, he was rebuffed by the lecturer:

She's being completely condescending. "You can look up anything on the internet" Then refers him to site on abstinence education! — Alice Dreger (@AliceDreger) April 15, 2015

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Dreger’s 45-tweet description of the lecture was captured in its entirety on Storify, but some excerpts can be seen below:

The whole lesson here is "sex is part of a terrible lifestyle. Drugs, unemployment, failure to finish school — sex is part of the disaster" — Alice Dreger (@AliceDreger) April 15, 2015

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"You'll find a good girl. If you find one that says 'no,' that's the one you want." HE ACTUALLY JUST SAID THAT. — Alice Dreger (@AliceDreger) April 15, 2015

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She's now telling story of condom box in which EVERY SINGLE CONDOM HAD A HOLE. — Alice Dreger (@AliceDreger) April 15, 2015

"We are going to roll this dice 8 times. Every time your number comes up, in pretend your condom failed and you get a paper baby." JESUS!!! — Alice Dreger (@AliceDreger) April 15, 2015

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"You have to have a baby!" There are apparently no scissors in the room for paper abortions. — Alice Dreger (@AliceDreger) April 15, 2015

I just want to grab all those kids after school and say HERE IS THE TRUTH. SEX FEELS GOOD. THAT'S WHY YOU SEEK IT. TAKE CARE & HAVE FUN. — Alice Dreger (@AliceDreger) April 15, 2015

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Dreger also wrote that the teacher accused her son of “ambushing” him by bringing up information challenging abstinence-only theories, and that she “said f*ck about 10 times in front of some students” after the class.

Lansing State Journal columnist Judy Putnam reported that Dreger was banned from the school outside of her son’s events because of her use of profanity.

“I support the appropriate expression of a plurality of viewpoints,” principal Coby Fletcher said in a statement. “However, I am very concerned by the utter lack of civility I see conveyed in the tweets and the behavior the tweeter admits to exhibiting in the classroom. This is not representative of the conduct we expect to see adults model for our students.”

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Putnam also criticized Dreger’s language, saying that while she “may well have valid points” regarding the school’s approach to sex education, “I’m not sure embarrassing her own school district using tweets littered with the f-bomb is the right way to make them.”

Dreger posted her own criticism of Putnam on Thursday:

Btw when the local @LSJNews tsk-tsk columnist called I asked her if she knows who @fakedansavage is. No. I should have sighed and hung up. — Alice Dreger (@AliceDreger) April 16, 2015

She also recounted the experience in a column for The Stranger that was published on Thursday, while adding that she regretted not going to school board meetings where the sex-ed curriculum was decided.

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“Liberal parents like me, the mistake we make is thinking of ourselves as the kind of people who don’t interfere in public schools,” Dreger wrote. “As a consequence, the only people who do interfere with sex-ed curricula are the conservatives. If people like me — people who want to see sex ed include teaching about masturbation, the pleasure urge, the existence of LGBT people — don’t show up and push our side, the ‘middle ground’ turns out to be damned near the right.”