This is not a typical high school exam. This is the exam for university acceptance where every public university require you to take. Even some of the best private universities require you take it. Students study for this exam for a year or multiple years and it covers all the stuff you learned in high school. This year over 3 million student took the same exam. It is extremely competetive.

Nobody really cares if you cheated on your high school math test but this stuff is serious.