I don't know if anyone has mentioned it yet but from the small bit of school resaerch that I've been doing - 4th + children are often free. However, I'm not sure if that is only valid when 4 or more children are in the enrolled in the same school at the same time, or if it just applies to the 4th child to be enrolled in the same school full stop. IYKWIM? Can any of you ladies confirm this for me?

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Of course, this is not reason alone to have a 4th child - but it does make it more appealing if you are already seriously condidering it!