Ah, she does do karate already - did it for a year when she was 4, took a break when we moved house, then started up again a couple of years ago. I do think it's useful for pretty much every kid.
The reason I'm worried is that she already has problems at school. The psychologists say she's autistic; I'm not sure I agree with that, but she certainly does have a problem with school, so I'm going along with the diagnosis because it means she'll eventually get a full statement (which will, among other things, mean the school I want her to go to will have to take her). She doesn't know that's the label she's been given, though.
If you don't give her instructions in a particular way, she won't understand. If you don't jolt her every 2 minutes, she'll go into a daydream and stop doing whatever it was she was doing. If she has to work in a noisy room, she gets overwhelmed and zones out. I know, I know, all kids are like this sometimes, but it's a matter of degree. Those problems are easily overcome in a small group situation, but not in larger classes.
She is also even more forgetful than other children her age, and has a terrible sense of direction - it was only recently that she learnt left from right, and she still gets them - and the difference between forwards and backwards - wrong half the time. Given the number of kids I've seen given detentions for forgetting a pen or being five minutes late, she might end up with daily detentions for something that's not her fault.
She spent pretty much all of years 3 and 4 sitting in the book corner reading, refusing to do anything else. That was an improvement on years 1 and 2, where she hid under tables to read, hit out when told to do anything, drew angry pictures of death into the desk, all sorts of disturbing things.
For those couple of urbanites that have met her, this will probably be very surprising. When she's with me, she's happy, bright and very well-behaved indeed. If she's not laughing herself, she's making other people laugh with her funny and sometimes clever comments. And, although it sometimes takes a couple of reminders, she always does what I tell her to and never independently decides to do something 'bad,' except for being so messy that visitors should probably take a valium before entering her room.

She's a lovely kid.
She's also fine in less formal situations, like her afterschool classes or the adventure playground. It's school that changes her.
