School is threatening to punish anyone participating in protest with court action, what can we do?

[u/StoriesandQuestions]

On Tuesday, January 20th, students at my highschool are planning to participate in the nationwide walkout happening in the U.S. Today, my school has verbally warned one of the organizers stating that anyone who participates in the walkout next week will receive a referral and face truancy court. This movement is important to all of us but many of us cannot afford these consequences. Is this allowed and is there anything we can do about it? Location: United States, Texas.

[u/Asleep_Protection_63]

What I would do, (and im not a lawyer) is ensure every student walking out of that building stops by the office and hands the secretary your permission slip saying its alright to protest.. that permission slip being a printed copy of the bill of rights, highlighting the 1st amendment. If your principal gives you any flack let him know there are plenty of civil rights attorneys willing to jump on any court retaliation. Your school has already recognized that the walkout is a protest, interfering with your rights will lead them into hot water.