GILBERTSVILLE – The Gilbertsville-Mt. Upton Central School District will host a grand opening event Thursday to celebrate the completion of needed renovations and additions to the elementary, middle, and high schools. The grand opening will be held from 4:30 to 7 p.m. with tours given every half hour throughout the evening from the main lobby. The school is located at 693 State Highway 51, Gilbertsville. The grand opening will feature District Superintendent Glenn Hamilton accompanied by Todd Coleman, Mike DiPerna, Brad Talbot, and Arthur Van Gelder from the C&S Companies, the school’s construction manager. C&S will have a tent set up in the bus circle showcasing a slideshow of the project and an ice cream treat for all those in attendance.