There is something wrong with Princeton. I just did their free practice test. They have a difficulty rating for each question from 0-12.
I got extremely extremely easy questions on Quant. My score was 49 and these questions had very high difficulty ratings on average. With questions with difficulty 11 and 12 which felt like 7 or 8 compared to OGs or other practice tests.
Then I did the Verbal. The questions really were not that easy compared to other difficult question I've seen in OGs or other tests for example, but the difficulty rating displayed showed that none of the questions were above a 6.5 difficulty. Like I had a streak of 7 correct in a row for questions of 5.5 difficulty on average, however the difficulty of the question after was 0.5. Which is ridiculous because it is definitely not that easy. The difficulty never once went above a 6.5 and it never felt like medium difficulty questions throughout,
There was one reading comprehension with 3 questions. Other forums claimed the difficulty of the questions given was 600-700, 600-700 and 700-800. The difficulty Princeton gave? 1, 2 and 2.5. OUT OF 12. Like this question was harder than most of the last 10 in the
OG and this was supposed to be a 1/12 in difficulty.
I never even got a singular attempt at a difficult question which just seems so flawed when I get 7 in a row right at a difficulty of 5-6.5 and I'm still stuck at that same difficulty. And since I was getting only low difficulty questions, my verbal score was 24. This is the worst verbal score I've gotten ever, even worse than my very first practice test where I had no preparation. My verbal on average is 40 and I studied verbal even more since then.
That's why I think the difficulty rating given to the questions is wrong. So to test this theory I did a Kaplan test the day after and got Q49 V31. Still a really disappointing verbal score and furthermore, I even got more wrong this time than before. In the Kaplan test I got 18 correct compared to 22 of Princeton, with still some early questions wrong, but the questions being rated properly in terms of difficulty and actually being allowed to attempt difficult questions meant my score was higher. And not to mention the quantitative section was much harder and much more representative of the real test.
I was going to buy more tests from Princeton but definitely not a good site. Best to skip it. From my experience and from what I can see from other people on this site is, if you get the 1st question wrong on Princeton, your entire test is screwed. You will not get difficult questions, or the algorithm severely underestimates the difficulty of the question, and your score will be low even if you make few mistakes.