Hundreds of people gathered Friday to celebrate the 40-year anniversary of Fulton County’s Mountain Park Elementary. “From 1973 to 2013, Mountain Park Elementary has remained a special place for alumni and current students,” principal Stacy Perlman said during the school’s birthday celebration. Doris Robertson, principal at MPE from 1981-1983, cut the first piece of the birthday cake. “What an honor it was for me to be invited to attend Mountain Park Elementary School’s 40th birthday party,” Robertson said. The Roswell school opened with 250 students in grades 1-7 and now has more than 800 students in pre-kindergarten to fifth grade.