First of all, everyone can write an application for joining the party. I suggest you download some materials online and write them with a carbon pen, so as not to rework them when you join the party in the future.

Secondly, if you are a member of the class committee or student union, you can generally become an activist in the first year, otherwise you will wait for your sophomore or junior year.

Thirdly, if you want to be an activist or prepare for party member, you need your classmates' votes. There are three ways to let others choose you: class Committee, good popularity and excellent study. Choose according to your own situation.

Finally, I think it is enough to prepare for college, and I will automatically become a full member of party member after one year.

I hope this solution will satisfy you.