This might sound like a stupid comment, but all kids are different. Obviously there are things you can do to encourage them, such as encourage them to read, talk to them, watch educational TV shows, be proactive in talking to them about their school work/what they would like to do in the future etc.
But if a child doesn't like reading, they won't read.
If they don't like the structure of formal education, they will rebel against it.
There's a fine line between encouraging and pushing - push too much and they'll push back.
The best thing you can do is not worry about it. I know it's easier said than done. But raise a happy, healthy child - and the rest will fall where it's meant to.
Some kids do very poorly in school and then excel at careers such as plastering, brick laying, computer game design .. there's so much that doesn't fall within the traditional curriculum.