Genki Japanese School in Fukuoka, Japan

My advice is to develop a good plan and self study methods to supplement your program.
Things I wish I'd known about studying since the very beginning and would advice:
1. Podcasts. Begin listening to podcasts since the very beginning for listening practice (Nihongo con Teppei Beginners Level and Intermediate Levels are good available podcasts). It is a really underrated form of practice and study. Don't worry if you can't make out the words. Listen to it multiple times, look up new words, ask Japanese friends for help.
2. Wanikani. Begin Kanji practice with WaniKani app. Knowing were or how to start learning and practicing Kanji can be frustrating, I get it. I would switch methods, do books, etc. I found about this app through a friend, and will never look back. Do yourself a favor and simplify your life by just sticking to one thing for Kanji practice. This is all you need to learning to read Kanji. (And for writing, I kept a Japanese diary.)
3. For speaking, just speak it everywhere you can. Your classmates might want to slack during breaktime. Screw them, keep speaking. Attend language exchanges. Hang out with Japanese speaking friends. Stay at a sharehouse. Speak it!