I've only just caught up with this one. We also homeschool 3 of our 4 kids. No, you don't need to put your child into school. If they've not previously been enrolled and you are new to the country, simply apply for an exemption as soon as you are settled and have a permanent address. Be sure to fill in the application very thoroughly and it helps enormously to get acquainted with your local home ed support/sports/social groups and perhaps mention these on your application, since you'll have to show you provision for the old socialisation issue, to prove you are not hermits.