Mensa really needs to be left out of these discussions. It’s not scientific, it is just a money grab for people who need intellectual validation. You can be admitted with a top 10% SAT score and no in-person testing at all. The in-person testing is in three parts, one part is a memory test, the second part is a Mensa test, the third part is the Weschler test. Source: I joined in 1995 because I needed intellectual validation. :)