A Marion school teacher has been arrested and transported to the Waupaca Co. Jail following a sexual assault charge. Timothy A. Gast was formerly charged earlier today by the Waupaca Co. District Attorney’s Office with Repeated Sexual Assault of a Child and Child Enticement. On Monday, April 24th, the Marion Police Dept. was notified by an 18-year-old student at Marion Jr./High School of inappropriate text messages she had received four years ago when she was 14 from a teacher, alleged to be Gast, from the Marion School District. The victim’s name is being withheld due to the sensitive nature of the incident. Gast has been placed on administrative leave by the Marion School District.