Advice please/ high school 😬

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I’m an upcoming freshman, I’m from a small rural town but since I’m going into a medical vocational school I’m going to a HUGE high school (it’s a regular high school but has 3 vocational schools inside [academy of health Professions, academy of future teachers and academy of culinary arts ) but anyway I’m nervous as hell 😅 do you guys have any advice for me ? Thank you ladies