Turn into Pattonville’s parking lot at the stoplight, stay to the right. The stadium will be on the right edge of the lot, the school building will be on the left, and there will be a wall of windows for the Natatorium at the end of the lot.  Go up the ramp by the wall of windows and enter through that door.  You will come into a common area, go straight and down a couple of steps to the hallway.  Turn left, then right.  Go past the main desk and continue down the D wing to D108.  (Do not enter the building under the bridge – those doors are not always open).