I’ll let you in on a little secret: Teachers don’t know everything. You probably already thought as much, but few teachers are ready to admit it. It may surprise you, but one of the best things you can do to support your children’s progress is to admit when you don’t know something — and then help them to find the answer. — I’ll admit that over the years in the classroom, there have been several moments when I’ve had teach something I wasn’t familiar with until the night before. And yet I still manage to teach well, and help my pupils to progress along the way. Is it down to the constant…