In the wake of a school shooting in Florida that left 17 dead, New York City Mayor Bill de Blasio said students won’t face serious disciplinary action if they choose to participate in a national school walkout planned for next month to protest gun violence.

“If I was a high school student today, I’d be walking out,” de Blasio said Thursday. “This is too important a moment in history to try to hold back the desire of our young people to see fundamental change and to protect themselves.”

Students across the country are planning to walk out of class at 10 a.m. on March 14 “to protest Congress’ inaction to do more than tweet thoughts and prayers in response to the gun violence plaguing our schools and neighborhoods,” according to a Facebook description of the event.  The protest is scheduled to last 17 minutes, one for each person who died at Marjory Stoneman Douglas High School.

And unlike one Texas school district, which threatened to slap students with suspensions if they walked out, de Blasio said students would not face serious discipline. “There’s no negative, lasting impact if they do this,” the mayor said.

De Blasio’s tacit endorsement of the walkout comes just days after he announced that schools across the city would deploy more “rapid-response lesson plans” about current events. On Friday, de Blasio told WNYC’s Brian Lehrer that the protests are a “teachable moment.”

We are going to do lesson plans around this issue leading up to that day,” de Blasio said. “We are going to make sure that there’s a real educational impact.”

The city also announced this week that every New York City school will hold a lockdown drill by March 15, and every middle and high school will be subject to at least one random screening with metal detectors this year.

Here’s more on what de Blasio told Lehrer this morning:

For high school students – we are going to be very clear, we want parents to weigh in, to let us know if they are comfortable with a young person walking out. It is supposed to be for 17 minutes. We expect the school day before and after to proceed. For younger folks – middle school, elementary school — the model I’m interested in, we are still working on this, is to have it be within the context of the building, you know to gather in the building for the memorial to the 17 young people lost, 17 people lost I should say. And again that may be silent, that may be with young people speaking, that’s all being worked through.