Email New York Post Log In US News Metro Long Island Politics World News US News Teacher killed by Wisconsin school shooter Natalie Rupnow was subbing for regular teacher away on vacation By Patrick Reilly Published Dec. 18, 2024, 7:57 a.m. ET 220 The 15-year-old who shot up a Wisconsin Christian school killed a substitute teacher who was covering for another educator who had gone on vacation this week, according to a parent. Natalie Rupnow gunned down the substitute, another teenager and wounded five others before taking her own life in a mass shooting at the Abundant Life Christian School in Madison on Tuesday. The substitute teacher was running a study hall for students when Rupnow barged in and started pulling the trigger, Lyndsay O’Connor, whose daughter and son attend the school, The teacher died protecting her class. Many more lives could have been taken. She (Rupnow) sent off multiple rounds,” she said. The teen shooter “was very much to herself” and was known for wearing “a collared shirt with a tie, jeans, and combat boots” to school, the mom said.