NEWPORT NEWS, Va. (AP) — The Virginia elementary school where a 6-year-old boy shot his teacher reopened Monday with stepped-up security and a new administrator, as nervous parents and students expressed optimism about a return to the classroom.

Richneck Elementary School in Newport News opened its doors more than three weeks after the Jan. 6 shooting. Police have said the boy brought a 9 mm handgun to school and intentionally shot his teacher, Abby Zwerner, as she was teaching her first-grade class. Zwerner, 25, was hospitalized for nearly two weeks but is now recovering at home.

Several...