The garden is in front of the main building, the dorms are on either side of the main building (I think), and the large group is behind the girl's dorm.
Of course, I might be wrong, as the Kamasyia academy (now Kalmasyia, rebuilt after a giant demon attacked and destroyed Kamasyia) had everything in one gigantic building that had like one hundred floors.
Are you confused? That makes two of us .-.