A safe school complex which includes a plurality of classroom modules joined together to form an enclosed courtyard. The courtyard may be a park or play area depending on the needs of the school. A covered walkway surrounds the courtyard in what is commonly referred to as a race track design. Each module has a two way front entrance door having access from the covered walkway. Each module further comprises an emergency exit at the rear of the classroom module. A controlled access entrance unit is provided for controlled and secure entrance to the courtyard and classroom modules through entryway. The classroom modules also include an alarm system which includes a visual indicator in the form of a flashing light, and an audio indicator in the form of an alarm horn contained within an indicator housing.