School District 3

School District 3 (第三学区) is the northernmost district in Academy City. It is bordered by the Saitama Prefecture to the north, School District 14 to the east, School District 4 and 16 to the south, and School District 20 to the west.

Its primary focus is for accommodating authorized outsiders, which includes hotels and restaurants.

Principles
It is the school district that has accommodations for its authorized outsiders. There, the district contains a number of international exhibition halls, which promotes state-of-the-art technology from Academy City to its guests. As such, there were always multiple events being held in District 3, such as motor shows, robot shows, and specifically, the Interceptor Show. Technology that the Board of Directors had deemed of an acceptable level to be used outside the city was on display and the outside company that gave the best deal was chosen (Academy City did not "look for" them, they merely "chose"), and that company would pay them vast amounts for that tech.

A direct railroad line leading from School District 23 to School District 3, allows foreigners to quickly access the luxurious hotels and facilities of the district that were the highest in all of Academy City.

Celebrities tended to gather in the district, and use ethanol-based fuels for their car to have a distinction between the fuel they put in their cars and the fuel normal people put in theirs.

The district is also well known for its rentable Private Salons, as used by Hamazura Shiage and ITEM.

Document of Constantine Arc
The Interceptor Show occurred on the International Exhibition Hall in School District 3, where various technologies were on display, such as the HsPS-15 and the HsAFH-11.

Battle Royale Arc
The Botanical Ethanol Fuel Plant was the site of Mugino Shizuri and Hamazura Shiage's battle and much of its interior was destroyed during the course of the battle.

DRAGON Arc
Following the failure at Hula Hoop, the remnants of Spark Signal moved through the Underground Shopping Center as they headed for a getaway vehicle to escape, and were attacked by GROUP as they did so.

Ten of twenty of the surviving members escaped and took hostages at a Private Salon, including Takitsubo Rikou.