Final answer:
The social worker should immediately refer the child for a medical evaluation and report the suspected abuse, prioritizing the child's safety.
Step-by-step explanation:
The social worker should take immediate action by referring the child for a medical evaluation and report the suspected abuse to child protective services as mandated by law. It is essential to prioritize the child's well-being and safety based on the signs of physical injuries and changes in behavior, such as withdrawal and anger.
Teachers and school staff are often among the first to recognize signs of child abuse and are legally obligated to report it. Prompt, proper intervention can prevent further harm to the child and is an important step in addressing the potential long-term effects of child abuse, which can include a range of developmental, emotional, and psychological challenges. It is critical to act swiftly, rather than solely relying on discussions with the parents or interviews with other personnel, to ensure the child's immediate safety and well-being.