That sounds awesome! Where is this?
Right across the street from my house in a residential neighbourhood, behind a church.
I meant it more as a general observation about school parking lots being good because they're empty on evenings and weekends, unlike malls. The rest was a comment on how lucky I was, which could change if more people find it!
You don't need a lot of space to practice basics. The key thing about practicing is to have targets. For braking, don't just ride along and stop. Pick targets. Pick a braking point and and end point. Pick a braking point and then just stop as quickly as you can. Practice turns and swerves using landmarks. Cones, tennis balls (cut in half), even the lines on the lot. Challenge yourself. Most often, you can practice in any parking lot for at least 5 to 10 minutes before anyone even thinks about telling you you're unwelcome.