Stangel-Plowe, pictured directly above, who taught at the Dwight-Englewood School in Bergen County, accused the school of creating a 'hostile culture of conformity and fear'.
Her resignation letter was published by the Foundation Against Intolerance & Racism.
The organization said she is an 'award-winning teacher' and a graduate of Cornell University, as well as a published poet, in highlighting her credentials.
Stangel-Plowe said Head of School Rodney De Jarnett told the entire faculty that he would fire everyone if he could to replace them with people of color.
Black Columbia professor calls for 'truly antiracist parents' to pull their kids out of $52k New Jersey school after teacher quit over critical race theory lessons and says only this will stop the 'misguided quest'. John McWhorter, an associate professor of English and comparative literature at Columbia University, tweeted his support for Dana Stangel-Plowe.