The 160–165 plateau
The middle plateau is where most disciplined self-studiers stall. You've done a few PrepTests, your accuracy is in the high 70s, but you can't break through to 165+. The fix isn't more drilling — it's surgical work on your weakest question types. Per-question-type mastery analytics tell you which categories (parallel reasoning, principle-justify, role-of-statement) are dragging your score, before another full PrepTest confirms it.