Yeah, usually it's been who answered more questions or using open-ended questions (I like using open-ended ones, others like who answered more, some prefer multiple choice...I dislike multiple guess). I haven't actually had to for any, but I've gotten close and tiebreaking has been a major pain sometimes. Some of the tryout tests I made have been so hard I often saw scores of only 1 or 2, and people often tied at a low raw score for the max. Of course, I thought it wasn't so bad...Hard tests are good, but balanced tests are better.
Point is that people may not get 0s, but you don't want the case where it gets really close to that/make a test so impossible it's discouraging and most do badly. Some people may like impossible, so this is why balance is important. As such, you get random easy HR diagram questions, and you will always get those. Alas, at least look forward to getting some points! I do know the complaint for harder questions, though, is normally because of random test writers at regionals copying qs, etc...but doesn't mean some easy standard qs are bad.
B: Crave the Wave, Environmental Chemistry, Robo-Cross, Meteorology, Physical Science Lab, Solar System, DyPlan (E and V), Shock Value
C: Microbe Mission, DyPlan (Earth's Fresh Waters), Fermi Questions, GeoMaps, Gravity Vehicle, Scrambler, Rocks, Astronomy
Grad: Writing Tests/Supervising (NY/MI)