In a win for free speech, a federal judge late Tuesday ordered Maud Maron immediately reinstated to Manhattan Community Education Council 2.

Schools Chancellor David Banks had invoked Chancellor’s Regulations D-210 to oust her from the board in June, claiming she was off-base in telling The Post (as the mom of a student at the school) that an anonymous student-paper piece was antisemitic.

But Judge Diane Gujarati declared that regulation unconstitutional, noting: “Securing First Amendment rights is in the public interest.”

The ruling also undoes Brooklyn CEC 14’s rule barring parents from criticizing the “competence or personal conduct” of individuals, including school officials and employees, at its board meetings or on social media.

Ironically, it seems obvious that Banks actually ousted Maron to “balance” his removal from the CEC 14 board of an obvious antisemite.

It also let him appease activists upset by Maron’s public calls to re-examine Department of Education policies on trans kids in sports and so on.

Note that D-210 was the brainchild of de Blasio-era Chancellor Richard Carranza, who pushed through the rule to punish another parent activist, Yiatin Chu, who clashed with Carranza over the push to ax the Specialized High School Admissions Test.

To be clear: Banks still has the right and the duty to remove CEC members who cross legitimate lines.

But, as Maron told The Post, “Free speech rights protect parents when they speak up about our children’s education — on matters routine and controversial.”

Our advice: Quit trying to silence Maud Maron.