The Needville ISD is very sensitive to violence in schools including the recent incident in Florida.
"A school is a place to learn and grow educationally, emotionally and morally", Rhodes added in his letter.
The students, who support stricter gun control laws, walked out of the high school at 2201 Encinal Ave.at about 11 a.m. Wednesday but returned to class by about 12:30 p.m., according to school and police officials.
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One student, Yezi Gugsa says, "If the adults in power aren't going to be the ones making a change, then we need to be the ones making the change".
"While students have a first amendment right of freedom of speech it can not be done so in a manner that is disruptive to the school environment", The official school board communication said. "All will be suspended for 3 days and parent notes will not alleviate the discipline".
While more than 30 South Florida schools walked out to protest America's gun laws on Wednesday, one Florida school district was not prepared to let its students do the same.
Following their calls for discussions on gun control, Florida survivors have been forced to defend themselves against conspiracy theorists who suggested they were "crisis actors", with Donald Trump Jr. liking conspiracy tweet on Twitter that suggested one survivor was involved in a cover-up because his father once worked for the Federal Bureau of Investigation. "Any time a student misses all or most of a class they are marked absent so that we have an accurate record of student attendance to report to parents and the Oregon Department of Education".