We have also been in your position. When we were in high school, the only Physics and Mathematics competitions were those that required research, time and commitment beyond our abilities. These competitions are fine, but we'd rather spend our time studying for tests without worrying about the huge extra commitment. We recognised that this was the case for many students who were willing to challenge themselves in competitions. We saw that teachers were also reluctant to recommend these competitions to the students, because the contents are out of the scope of what they teach. We believe that competitions, while allowing students to be challenged, should not harm their motivation and enjoyment.
This is why we, a team of university students from all over the country, have created the NZPMC. We radically limited the contents to common curriculums that are taught in high school. We designed questions so that they will test the level of students' flair on the essential and rudimentary physical concepts. This eliminates the you-either-get-it-or-not get-it element. As long as you study the core material correctly, you will gain a high mark in this exam, and be rewarded for your hard work.
Also, the time spent on preparing for this competition will not go wasted, since our questions mostly follow common curriculums taught in high school. Yes, there will be extensions to some exotic concepts. However, those materials will be explained in the questions themselves, and we will make sure that they are clearly stated at What Do We Test? section.