Art educators inspire and elicit most of the art we see from day to day. Their students create masterpieces after learning the most basic and complex techniques from their paintbrush-, pencil- and clay-wielding coaches. For its next exhibition, the Quinlan Visual Arts Center in Gainesville is honoring those leading the classroom and molding future artists with a special show, “Vanguard: A Juried Exhibition Honoring Georgia Art Educators.”