Final answer:
It is important to report clumsiness and behavior changes in children with rheumatic fever.
Step-by-step explanation:
The nurse should emphasize to the parents and school teachers that it is important to report clumsiness and behavior changes in children with rheumatic fever. A change in behavior, such as increased irritability or decreased concentration, can be an indication of worsening symptoms or complications. Clumsiness can be a result of joint pain and swelling, which is a common symptom of rheumatic fever. By reporting these changes, appropriate medical intervention can be provided to manage the condition effectively.