If you want to participate in Littleton High School's STEM Certificate Program, visit the STEM webpage on the LHS website to find the online registration form. Take note that there are two different forms available, one for current Littleton students and one for incoming Freshmen. Be sure to read all of the information on the STEM website in order to fully understand the requirements of the STEM program. All current freshmen, sophomores and juniors are welcome to participate.