Students in Atlanta are mixing up a concoction on the way to school and getting drunk in class, with at least one student hauled to the emergency room.

Officials at Grady High School downtown sent a message to parents warning that students are stopping in to the Trader Joe’s grocery store to purchase bottles of Pure Bourbon Vanilla Extract, then mixing the flavoring with coffee from a nearby Starbucks to catch a buzz on the way to school, The Atlanta Journal Constitution reports.

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“This is not an indictment of Trader Joe’s at all,” officials wrote, “but parents please be aware that this product contains 35% alcohol and we have discovered that some students have consumed this intoxicant. Another thing to keep an eye out for.”

The vanilla extract derives from vanilla beans that are steeped in a mix of ethyl alcohol and water and sold in the baking section of most grocery stores.

“A small bottle of this vanilla extract is 70 proof, which is a little less than a bottle of vodka,” according to WTVD, which reports at least one student was taken to the hospital after swigging the stuff.

Drinking a 4-ounce bottle is similar to drinking about two and a half beers, or about 12.5 ounces of table wine, according to an alcohol content calculator from Rethinking Drinking, a service from the National Institute on Alcohol Abuse and Alcoholism.

The extract-coffee concoction is also expensive – roughly $12 a batch.

The AJC reports a 4-ounce bottle at Trader Joe’s across the street from Grady High School costs about $9. A Starbucks coffee is another $2 or $3, depending on the size.

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The AJC’s Maureen Downey, who writes a “Get Schooled” column, posted to Facebook about the school’s warning to parents, and many didn’t seem the least bit surprised.

“Drinking Vanilla extract as alcohol is nothing new. Back in my high school days kids made ‘super vanilla’ ice cream,” one person responded.

“ALL extracts,” wrote another. “The lemon extract in my cupboard (which comes in a relatively big bottle – 4 oz.) is 90% alcohol.”

Several folks also pointed out that Trader Joe’s is only one of countless places students can get their hands on the potent extracts, and it’s ultimately up to parents to keep their kids from guzzling it down.

“You can go to Publix or Kroger or Whole Foods or wherever. It’s in their cabinets at home,” one person posted to Facebook. “I’m sure TJs is convenient, but let’s not act like that’s the only source for their swill.”

“I think the point they’re making is that the word ‘Bourbon’ makes it more appealing or eye-catching to teens,” another posted. “Perhaps it’s a marketing ploy, and it’s worked, but for the wrong demographic.”