My wife and I recently attended an open morning at a private school. Some friends were horrified by the news. Their reactions had nothing to do with the fact that private schools reproduce inequalities, that their fees are ridiculous and they are recipients of obscene amounts of middle class welfare.
Instead, they were horrified we had left it so late. Apparently the best strategy is to go straight from the first ultrasound and then on to the open morning. Aged just 18 months, it seemed that our daughter had left her run at private school a little late.