How can I get to this MUN class at my high school even though my counselor said it's full? Got any advise?

I am a freshman going to high school and can't get a class that I want which is World Geography Honors with MUN (Moderate United Nation) and I'm only in World Geography Honors. I went to my counselor and she said it was full and also said that not everybody can get everything that they want which made me angry so I'm asking if any of you can help me. This World Geography Honors with MUN is a history class and a debate class where you debate about politics like global warming and picking a side on it. Also, if I take this class this can help me get into a good medical school in United States of America. Got any suggestion to help me get into this class?How can I get to this MUN class at my high school even though my counselor said it's full? Got any advise?
Contact some people in the class and ask if they'd be willing to drop. You seem to have your heart set on the class, while there are probably people that took it just to take it. Also, ask your counselor to contact you if any spots in the class open up.How can I get to this MUN class at my high school even though my counselor said it's full? Got any advise?
you should ask the teacher if they can fit you in and if they feel like they can ask them to write your counselor a letter.