Which is more important?

keeping a spanish 3 class which I could possibly could go to spain (parents haven't decided yet) but I really, really want to go. OR changing to a health occupation class which is a nursing class and is beneficial in learning when I'm going to take a career into the medical field?

If you are going to be thinking of a career in the medical field and this is the only opportunity to take this class, you should take the health occupation class. If you have other opportunities to take the class then I would take the spanish class because that could be a once in a lifetime opportunity for you. Plus with the growing amount of spanish speaking citizins, continuing an eduaction is spanish is very helpful too. Its a tough call.

health occupation class

This is up to you. I personally would take a Spanish class to be acquainted with the language and watch some videos to know their customs better. The nursing class would be a definite because anyone, anywhere would benefit from your fortitude in learning a very, caring profession. What shall we then say to these things? If God be for us, who can be against us? - Romans 8:31. The Lord daily loadeth us with benefits, even the God of our salvation. Selah. - Psalm 68:19. Read Psalm 35 (Plead My Cause) for the Lord's coverage against that which is known and that which is unknown. Then God will oversee every occurrence BEFORE it affects you and cause them to detour if they are inappropriate. Peace and God Bless.