Currently I am a ninth grader and I am preparing for the chemistry olympiad local exam (portal.acs.org/portal/Navigate?nodeid=528 if you're unfamiliar).
In school, I have not yet taken any chemistry classes (such as honors chemistry, AP chemistry, etc), and I have been studying with the help of books suggested in the "Recommended Books for High School Students" section, specifically General Chemistry by Linus Pauling and some supplements. With these texts, I feel like I have a good understanding of all the concepts I might need for the test that is upcoming in March.
However, I have been taking practice tests and while my scores have been steadily increasing, they seem to have plateaued around 54 and 55 out of 60. While these scores might let me go take the nationals test in normal school districts, my school district is exceptionally competitive (last year the winner of international bio olympiad was from our school, and we had a person go to IPhO, and another make the chemistry summer camp), and so I am a bit worried because only two people are allowed to take the nationals test.
If anyone has any experience with any part of the chemistry olympiad and can offer me any advice, I would be happy to hear it. As of now, I have taken all but two of the local exams, all of the archived AP chemistry exams , and done a good deal of the problems in a book titled 3000 Solved Problems in Chemistry by Schaum's.
Thank you for your time!