Final answer:
The nurse should include the instruction to administer controller medications consistently as prescribed when providing discharge teaching to the parent of a child with moderate persistent asthma.
Step-by-step explanation:
The nurse should include the instruction to administer controller medications consistently as prescribed when providing discharge teaching to the parent of a school-age child who has moderate persistent asthma. Controller medications are long-term treatments that help prevent asthma attacks from occurring. It is important to take them regularly as prescribed by the healthcare provider to maintain asthma control.