What it is: the parent with whom the child spends the majority of their time. Even when parents share parenting time, there may be a primary parent — for purposes of determining residency for school or other requirements.
What to know: “primary parent” is a functional label, not a fixed rule. The parenting plan and the allocation of parental responsibilities decide the actual arrangements — so read those, not the label.
Why the label still matters: school enrollment, the child’s address for records, and sometimes the calculation of support all hinge on where the child mostly lives. It’s a description of the schedule, not a rank of who “won.”
Watch out for: don’t over-read “primary.” It does not mean the other parent is less of a parent. In Illinois both parents can share decision-making even when one is primary for time.
