Absolutely, it is all very suspect.

They do cheat, in fact it is proven they cheated on the SATs:

https://christiansfortruth.com/how-jews-cheated-on-the-sat-and-infiltrated-the-ivy-league-schools/

“Historically, very few Jews could get into Ivy League schools — not because of “antisemitism” as many Jews claim — but rather because they just weren’t smart enough, which was reflected in their poor performance on the SAT test. A clever Jew from Brooklyn, Stanley Kaplan, changed all that, when he figured out how to crack the test and then tutor fellow Jews on how to increase their scores — opening the doors to the Ivy League:…”

SAT/ACT scores are definitely considered by organizations which are concerned with IQ such as MENSA.

https://www.us.mensa.org/join/testscores/qualifying-test-scores/

ACT Composite to be a MENSA member

Taken prior to 9/1989 : 29 (composite scores only)

Taken after 9/1989 : Not accepted

SAT

taken prior to 9/30/1974 : 1300 taken from 9/30/1974 to 1/31/1994 : 1250 taken after 1/31/1994 : Not accepted

Depending on when you took the SAT and/or ACT you can be approved as a MENSA member (a genius in the popular sense) based solely on your score.

Ivy League admissions is also cited as “proof” Jews have high IQs:

"Not to brag or anything, but according to USA Today, “Ashkenazi Jews comprise 2.2% of the USA population, but they represent 30% of faculty at elite colleges, 21% of Ivy League students, 25% of the Turing Award winners, 23% of the wealthiest Americans, and 38% of the Oscar-winning film directors.”

https://www.ynetnews.com/articles/0,7340,L-4098351,00.html

The question is, if the data that says “Jews have higher IQs” underlying any research is based on (in whole or in part) the college admissions tests, has research/meta research been filtered for this?

And why would “the smartest people” need to cheat to begin with?