This Practice Note details the extent to which the court must take into account the welfare and needs of any minor child or children of the family, by virtue of section 25 of the Matrimonial Causes Act 1973 (MCA 1973) and Schedule 5, Part 5 to the Civil Partnership Act 2004 (CPA 2004), in determining how to exercise its powers, and outlines additional factors and other courses of action that may be considered, including where the child has special needs. Who is a child of the family? A 'child' is defined by MCA 1973, s 52, in relation to one or both of the parties to a marriage, as including 'an illegitimate child of that party, or as the case may be, of both parties'. MCA 1973, s 52(1) defines a 'child of the family' as: • a child of both parties, and • any other child who has been treated by both parties to a marriage as a child of their family (not including a foster child placed with the parties as foster parents