To improve your English proficiency in high school, you can follow these steps:

1. **Daily Reading**: Read English books, newspapers, or articles to improve your vocabulary and comprehension skills.

3. **Writing Practice**: Write essays, journals, or even letters to practice your writing skills. Consider joining an English debate club or a writing workshop.

4. **Speaking Practice**: Speak English as much as possible. Find language exchange partners or join English conversation groups to practice speaking.

6. **One-on-One Tutoring**: Consider hiring a private tutor who can tailor lessons specifically to your needs and help you overcome specific challenges.

Remember, consistent effort is key. Keep practicing daily, and your English skills will gradually improve.