A lesson plan in schools across Texas depicts the Boston Tea Party, the historical protest against taxation without representation and a seminal event leading up to the American Revolutionary War, as an act of terrorism.

The lesson plan, designed for world history and social studies classes, remained available to teachers as recently as January of 2012, CBS Houston reports, and was promoted by the Texas Education Service Center Curriculum Collaborative.

“A local militia, believed to be a terrorist organization, attacked the property of private citizens today at our nation’s busiest port,” the part of the curriculum pertaining to the Boston Tea Party reads, according to CBS Houston. “Although no one was injured in the attack, a large quantity of merchandise, considered to be valuable to its owners and loathsome to the perpetrators, was destroyed. The terrorists, dressed in disguise and apparently intoxicated, were able to escape into the night with the help of local citizens who harbor these fugitives and conceal their identities from the authorities.”

Read more: Daily Caller