OP, I value education (I'm a teacher, so I jolly well should!) and this attitude will of course be evident to my children. My daughter is only in year 1, so not quite what you are after. I expect her to do her best and not be scared to make mistakes - to have a go - be it with academics, sport, or socially.
More than anything though, it is important that my children enjoy school and I hope to foster a lasting love of learning. I value this much more highly over quantifiable achievements such as grades. So at home I make sure she has the resources to pursue her own areas of interest as well as completing set homework tasks. We always spend time talking about what was fun at school today.
Of course, like any parent, my chest swells with pride that she's in the top reading group or when she gets a certificate, but it makes me so much happier when I catch her under the doona with a torch and a book because she just wants to keep reading.