Courts make custody decisions based on the best interests of the child, and if you’re seeking sole custody, you need more than just good intentions. Sole Legal Custody – One parent has the exclusive right to make major decisions about the child’s upbringing, including education, medical care, and religious practices. If you’re considering filing for sole custody, consult with a knowledgeable family law attorney who can guide you through the process and help you present the strongest case for your child’s future.