174? Well, 162 is top 0.5%, so...wow
For anyone interested in knowing, for Mensa, they send you a home test free of charge, and then you do that, and it's £10 to be marked. If you're in the top 5% of the country (I think it's something like 130+), then you are invited to sit an invigilated test at a venue nearby.
You go, and sit the test, which is really two tests I believe...and each one has several sections. They give you an amount of time for each one, but it's ridiculous...I'm talking, 30 questions in a minute!
Anyway, when your result comes through, you have two scores on each scale. To be inivited to join Mensa, you need to be in the top 2% on at least one of the scales.