Check who should receive the message
Confirm that you have the right person, the right role, and permission to disclose the information involved. For a message about how to tell a parent their child is bullying others, use this factual base: state the child's schedule, health, school, expense, or behavior and distinguish observation from interpretation.
Separate information from interpretation
Label confirmed facts, open questions, and the specific decision that belongs to the recipient. Propose a child-focused plan, a response date, and the documented route for unresolved decisions. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Use formal help when stakes rise
Do not use the child as messenger, trade access for agreement, or criticize the other parent to the child. Follow custody orders and use safeguarding, legal, medical, or emergency support for risk to a child. Medical, legal, financial, employment, and safety decisions may require a qualified professional rather than personal persuasion.