A former Marion teacher was in Waupaca County Court Wednesday. 43-year old Timothy A Gast waived his preliminary hearing and entered a Not Guilty plea to four felony charges including three counts of Child Enticement involving sexual contact and Repeated Sexual Assault of a Child with at least three violation of 1st or 2nd degree sexual assault. Gast was arrested last month after a Marion High School student reported that Gast allegedly sent her inappropriate text messages and made sexual contact with her four years prior. Police records indicate that the student came forward after the Marion Police Department gave an internet presentation on internet safety. Has can receive up to 40 years in prison if convicted of repeated sexual assault. Child Enticement charges carry up to a 25 year prison sentence.