Are 'underscored/emphasized/stressed,' 'discussed,' 'selves,' 'hence,' and 'essential' correctly used in the sentence?

Are 'underscored/emphasized/stressed,' 'discussed,' 'selves,' 'hence,' and 'essential' correctly used in the sentence?

Mr. Martin, the discipline officer of Amy's school, underscored/emphasized/stressed the significance of student discipline and discussed the sanctions on specific violations of school rules and regulations. He said: "We use sanctions to help our students develop a fuller sense of their moral and ethical selves. Hence, they can reflect on their conduct, be better informed, make wise choices, and develop essential skills.”