I attached the map about the direction to Laurelwood Catholic school, you could not miss the soccer fields if you could reach the school and there are a lot of parking lots around the school.

For your convenience, here is the driver directions in text:
1. Laurelwood is located in the north of Waterloo, besides the conservation area.
2. go to the FischHallman road, keep driving until the end of road, you will find a T-type intersection: Fischhallman, Bearing Road and Laurelwood drive, and a traffic light (new)
3. Turn to the Laurelwood Dr.
4. Keep driving until you find the Catholic school on your left side, you could not miss it. (About 1km)