Decisions, not schedules
Joint legal custody is about authority over major decisions, typically education, non-emergency health care, and religious upbringing. It says nothing on its own about where the child sleeps; that is physical custody and the parenting schedule. Day-to-day choices during each parent's time usually stay with that parent. Many New York orders pair joint legal custody with a primary residence for the child. Both parents can usually get school and medical records directly, although a provider may ask to see the order first.
When parents cannot agree
Courts in New York have been cautious about joint decision-making where parents cannot communicate, because a deadlock leaves the child without decisions. Agreements and orders sometimes address that by giving one parent final say in a specific area after good-faith consultation, or by naming a method for resolving disputes. If you are proposing joint legal custody, the strongest support is a history of making decisions together: emails about school choices, shared medical portals, and texts coordinating schedules. If cooperation has broken down, collect records that show how that happened, and leave the commentary about the other parent out of them.
Drafting something that works
Vague language is a common source of future disputes. A workable plan spells out which decisions are shared, how promptly parents must respond to each other, and what happens in emergencies. When we start, we look at the decisions that have actually caused friction in your family and draft around them. We also consider how the arrangement would be explained to a judge if it does not settle. Schools and doctors respond more smoothly to an order that answers their practical questions, such as whose signature they need for a field trip or a new prescription. If you already share legal custody and the arrangement keeps breaking down, that history can support a request to change it.