HOSA's Mission:

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"To enhance the delivery of compassionate, quality health care by providing opportunities for knowledge, skill, and leadership development of all health science education students, therefore, helping the student meet the needs of the health care community."

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Diamond Bar High School HOSA's activities include:​

• Competing at the regional, state, and national level

• Listening to college professors' lectures on pre-med topics

• Raising awareness and holding fundraisers for charity health organizations