Final answer:
The nurse is assessing the health of the children by plotting their height and weight during a school assessment clinic.
Step-by-step explanation:
The nurse is assessing the health of the children by plotting their height and weight during a school assessment clinic. By tracking these measurements, the nurse can determine if the children are growing and developing normally. This information can help identify any potential health concerns, such as undernourishment or obesity, that may need further attention and intervention.