OAT is one of those open spaces bubbling with activities. School assembly is conducted here every morning. It has a raised platform with cross walls. Nearly 300 spectators can be accommodated. It is a place which hosts cultural, inter-house, inter-school events, dance performances, skit, music, scientific demonstrations, campaigning, scholastic book exhibition, yoga display etc. It is here the school election is held, where students from std.4 onwards take active part in casting their vote. Through these activities, an opportunity is provided for the students to prove their intellect.