Hey, let me clarify:

The VIP Sale was for our existing Devslopes student audience. We wanted to give them access to this sale first because they're the reason we're around today.
The Private Sale is just like the Pre-ICO phase – a private sale (with a private access code) with tokens sold at a discounted rate.
The Public Sale is just like the ICO phase – tokens sold at full price to anyone interested.

Does that help clarify?