Junior High as in middle school? Or junior year of high school?
Either way, take the mandatory core classes first to get them out of the way. Then find something your interested in and take a few extra classes in that area. I don't think it really matters because I took a variety of classes all throughout high school, and right now I'm pursuing Pharmacy.
What colleges really look at (depending on how selective), are your ACT/SAT scores, your cumulative GPA, your extracurricular activities, amount of community service, and for some, it's required you take 2+ years of spanish in order to enroll.
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