June 4, 2015 3:00 PM EDT

Four people could face jail time for cheering too loudly at a Mississippi high school graduation.

Authorities have charged them with disturbing the peace, punishable by up to six months in jail and a $500 fine, for disrupting commencement exercises at Senatobia High School on May 21.

One of them, Henry Walker, cheered, “You did it, baby!” when his sister’s name was called and was promptly whisked outside, his mother said.

“I don’t think it was right for what they did to him,” Linda Walker told NBC affiliate WMC in Memphis.

The superintendent, Jay Foster, who pressed the charges, told WMC that…

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