I am a rising sophomore.
I know a lot of business-oriented high schoolers join DECA. If your school does not have that, you can take initiative and start a group to compete! You can also participate in various entrepreneurial programs like MIT's Launch, or start on your own small business if you feel comfortable doing that. You can also start your own initiative where you educate elementary school/middle schoolers about various business terms. When planning my own projects, I received free mentoring from Learners Empowered (let me know if you are interested!). But that helped me a lot! I would just recommend brainstorming (you still have a lot of time) to figure out what exactly you want to focus on. I would also recommend picking one main project to invest your time in because it shows a lot of dedication.
Best of luck!
Personal finance, marketing, and civics (usually the class has a finicial literacy unit) are some good basics to get you started. Your school may offer "business" classes you can take. You may want to ask a counselor to see what "finance electives" are available, as it varies slightly from state to state.
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