Bend High School’s future auditorium will have a balcony, 1,400 seats and a more spacious lobby than the previous one. The design plans were revealed at an open house last week in Bend High’s gym.

When it comes to K-12 auditoriums, gone are the days of single-platform spaces attached to school cafeterias. Today, high school auditoriums often rival professional theaters, featuring fly lofts, ...