The Issaquah Valley and Apollo elementary school campuses will both hold public ribbon-cutting ceremonies Sept. 2 to celebrate their reopening after extensive remodeling.

Issaquah Valley Elementary School will hold its ceremony at 9 a.m., with Apollo Elementary School’s ceremony at 2 p.m. Attendees are invited to tour the new campuses and meet with teachers following the ribbon-cutting.

Both schools previously had an “open” campus style of interconnected but separate buildings, a style popular in the 1970s and ’80s for their ability to be rapidly constructed. The campuses have been enclosed to enhance lockdown security — electronic locks were also installed on exterior doors — and make energy expenditures from heating and air systems more efficient.

Issaquah Valley added eight new classrooms and four small “group breakout” areas. Administrative space was reconfigured to enhance visibility and the commons was expanded. Rubber flooring was installed to the commons, gymnasium and interior corridors.

Apollo received the same enhancements to administrative space and flooring. The campus additionally saw the reconstruction of its playfield to include sand surfacing. The hard surface area was expanded and new chips were placed in the big toy area. Paved parking replaced gravel parking.

The campuses were remodeled under auspice of a $212 million bond package approved by voters in April 2012. The funding was earmarked for the remodel of Apollo, Issaquah Valley and Sunny Hills elementary schools, as well as the rebuilding of Clark Elementary, Issaquah Middle School and the construction of a new high school campus. Stadiums and track and field spaces will be rebuilt district-wide. The Sunny Hills, Issaquah Middle and Clark projects will commence next summer.