This is a large gathering space located in the Middle School, which kindly shares it with the Lower School and Upper School on all sorts of occasions. Many of the large US homeroom meetings take place here. It's also the site of Faculty/Staff Appreciation luncheon. MS students have assemblies there, take drama classes there, and perform in recitals for their peers there. The annual Lower School Art Show takes place here. Parents new to the school will be invited to Allen Hall for a "Welcome to Hackley" event in the fall.