• LISD STEM Academy For the 2020-21 school year, Lewisville ISD will expand its STEM Academy program, a hands-on, collaborative learning environment dedicated to teaching students Science, Technology, Engineering and Math (STEM) skills. The LISD STEM Academy will be located at Donald Elementary, Polser Elementary, Bridlewood Elementary, and Valley Ridge Elementary. Watch the video below for a glimpse at what LISD's STEM Academy offers students.