PONCHATOULA — Ponchatoula Police Chief Bry Layrisson said Thursday that a former teacher arrested for alleged sexual conduct with a student is facing additional charges after an additional victim was discovered. Trey Sparks was arrested Oct. 6 on four counts of possessing child sexual abuse material depicting victims under the age of 13 and one count of prohibited sexual contact between an educator and a student.On Thursday, Layrisson said that …