Officials said a concerned parent called police after seeing someone walk into the school with unusual clothing.
Public Safety officials did a sweep through the high school — and no threat was found.
“There was no legitimate threat at AHS. It was a misunderstanding where a student wore a Star Wars costume for ‘May the Fourth Be With You’ day. There was no intent of a threat, but the student will be held accountable,” said Ashwaubenon School District said in a Facebook post.