Interesting. In my experience this wasn't common, but I was part of geekier VWO. Scooters were slightly more common at HAVO and very popular with VMBO. And while there might be a connection with education level, scooters were also stereotypically owned by Turkish/Moroccan kids.

I always felt a bit sad that it wasn't more normal for 'my crowd' to have scooters. I would've loved a scooter.