Mazon College is home to the RATS American football team, as well as one of the only zones with a 3 floor building (4 including antenna). It's also one of the few zones that has a permanent change to the environment (for you) after following the quest.
- Rats' Sporting Goods - From the spawn it is directly south. Go trough the building, and follow the path behind it to the chest.
- Rats Football Stadium - The American football field is directly north of the spawn (although you will have to go around the building). The chest is in the north corner of the field. It's also a good idea to check the lockers in the field, as like most secret passages items found within it are more likely to not be have a poor quality.
- Elisa Boston (2nd Floor) - From the spawn head to the north eastern most building and enter from along the east side of the map. Go up the stairs to enter the passage area. The chest is in the northern corner.
Click to enlarge. Map image provided by Bogkitty.