I have been to all of these places and I noticed they were incorrect on OSM.
I used City of Sarnia zoning data.
This is like a test track where new drivers can practice safely
This road was just completed and now connects to the roundabout.
Based on City of Sarnia land use and zoning documents
This school is new and was not on here.
I just aliened the path with the satellite imagery.
I just updated the boundaries of the areas.