I am in front of the science lab.
I go toward the classroom 3A.
This classroom is near the classroom 3B.
The classroom 3A is behind the auditorium.
The computer room is between the science lab and the library.
I walk along the hall and then I turn left toward auditorium, close to canteen.
From the library I go to the nurse's office through the little hall and then I turn right, the second door. At the second door I find the nurse's office.