Categories Volunteers 2015-16 Top Volunteer Hours: Heritage Elementary with 13,254 hours Post author By gcisdcouncil Post date September 29, 2016 The school earning Top Volunteer Hours for the 2015-2016 School Year is Heritage Elementary School with 13,254 volunteer hours. Congratulations! Share this:TwitterFacebookLike this:Like Loading... Tags Heritage Elementary ← Sept. 27 or 29, 2016: Required training for all PTA board members → Summer/August 2016 Volunteer Awards: Glenhope, Grapevine High, Heritage El.