Photo taken on Dec, 1, 2020 shows a mobile phone running the TikTok app (Credit: Xinhua/Ahmed Gomaa via Getty Images) In Wisconsin, the Waukesha School District and Menomonee School District issued letters to parents this week. "Parents, we are asking you to discuss this with your children," the district’s deputy superintendent wrote in a letter obtained by FOX 6 Milwaukee. "We take all threats seriously and any threats against the school or district will be disciplined to the greatest extent possible, up to and including expulsion from school.