Final answer:
Chorea is one of the criteria used to diagnose rheumatic fever. It can affect coordination and motor skills, leading to difficulties in school.
Step-by-step explanation:
Chorea is one of the criteria used to diagnose rheumatic fever. It is a movement disorder characterized by involuntary, rapid, and irregular movements of the limbs, face, and trunk. When the parents make the statement 'My child might have difficulty in school,' it indicates that they understand chorea because chorea can affect coordination and motor skills, which may result in difficulties in performing tasks such as writing or drawing.