School children catching train in the morning

[Flatforsale]

In the mornings I see secondary schoolboys catching a train to Victoria from Denmark Hill, and I'm wondering what school are they from? I have a boy so intrigued to know what secondary schools local boys travel to (apart from the charter/Harris/elmwood). Their logo has three golden stars on it. Also sometimes I see boys travel from the platform to Dartford, also intrigued what schools are in that direction?

[EDmummy]

Going in Dartford direction may be Dartford Grammar. In the other direction I know kids who travel that way and go to the Oratory, Pimlico Academy and many more. Alleyn's has 4 stars but children would be going the opposite direction.