Constitutionally-themed attire violates the district's dress code. Go figure... 

Via the Reno Gazette Journal: 

An eighth-grade student is suing the Washoe County School District after he was told to cover his pro-gun T-shirt because it was in violation of the district’s dress code.

The federal lawsuit, filed Tuesday morning in U.S. District Court in Reno, alleges that the school district’s dress code, which prohibits depictions of “anything that promotes weapons,” is a violation of the student’s First Amendment rights.

“This lawsuit challenges, at its core, the school district’s policy which we believe is unconstitutionally overbroad and violates the First Amendment on its face,” said Brandon Combs, president of the Firearms Policy Coalition...

He was again disciplined on March 12 for wearing a shirt promoting the Firearms Policy Coalition. That shirt features the words “Don’t Tread On Me” and a coiled snake. It also includes references to the Second Amendment and other “constitutional themes.”

The second shirt did not depict an image of a firearm. 

The lawsuit was filed by the student through his parents and is backed by the Firearms Policy Foundation and the Firearms Policy Coalition, two non-profit groups aimed at protecting the Second Amendment and the right to bear arms.

Read more here.