Grapevine-Colleyville ISD, a K-12 public school system in the heart of the Dallas-Fort Worth Metroplex, is making bold change ... s in the way we teach and the way students learn. GCISD maintains a long-standing commitment to educational excellence for all children. Building on its mission to be the BEST, the district continues increasing the level of rigor in classrooms to address expectations of the community and better prepare students for success in college and their future careers. It is an exciting time in GCISD, and we look forward to serving alongside our community toward our mission to be the BEST. We are Building Excellent Schools Together! read more