How to address an envelope to the parents of a child attending school?

To address an envelope to the parents of a child attending school, write the child's name on the first line, followed by "c/o [Parent's Name(s)]" on the second line. On the third line, include the family’s address, ensuring to include the house number, street name, city, state, and zip code. For example:
[Child's Name]
c/o [Parent's Name(s)]
[Street Address]
[City, State, ZIP Code].