Sixth-grade students Will Routhier, 11, and Iphia Zhang, 10, lead a tour Monday night of McMahon Elementary School for Lewiston School Committee members Renee Courtemanche, far left, Megan Parks and Mark Cayer. Routhier and Zhang are two of 10 student ambassadors asked to give tours when a new student enrolls or when visitors come to the school. Routhier and Zhang have been students at McMahon since pre-kindergarten. (Daryn Slover/Sun Journal)