Tips for a sophomore?

My younger sister, as of right now, is a sophomore in high school and wishes to go to UCLA after graduation. She’s involved in JROTC, the girls’ tennis team, and is taking English honors and AP euro. What can she do to become more competitive and prepared so she can easily get into a top school like UCLA when the time comes? What classes should she take and how could she maintain a high GPA? Thanks

She needs to follow the A-G requirements for the UCs.

https://www.admissions.ucla.edu/infoprospective.htm

Her high school counselor can give her more information.

If she’s an instate student, it shouldn’t be too hard to figure out the requirements. If she’s not instate, then she needs to be prepared to pay full fees of $55k per year.