South Garland High School Class of 1973 25-Year Reunion The South Garland High School Class of 1973 will be celebrating its 25-Year Reunion with two very special events on Sunday, July 26th: Family Picnic The Family Picnic will be held from 10:00 a.m. to 1:00 p.m. in the covered pavillion at Flag Pole Hill (Northwest Highway at Buckner Blvd.). Bring enough food and drinks for your own family.