I feel cheated as an Australian Citizen

I attended an art exhibition at the Heathcote Museum & Gallery, Duncraig Road, Applecross to view Tania Ferrier’s The Quod Project. Exhibition runs from 21 Jan – 27 Feb 2011. It’s about WADJEMUP, the island we call Rottnest which was a place of Aboriginal incarceration from 1839 until the early 1930’s, when the last Aboriginal prisoner was transferred. A traumatic site of imprisonment, and a burial ground for around 400 Aboriginal men.
I lived there for 12 months as a 5 year old and have visited the island several times but up until last night I did not understand the heartbreak and trauma that occurred. I feel cheated as an Australian Citizen that this information was not made available when I was in primary school.