<p>Those olympiads are in fact the ‘fake’ ones he’s referring to. They are organised by SOF which is just an org that uses the name ‘olympiad’. The olympiads that SOF organises, and this includes the ‘international math olympiad’ are actually only held in India and Singapore. The ‘real’ Olympiads are the ones as follows:</p>
<p>The International Mathematical Olympiad (IMO, since 1959; not held in 1980)
The International Physics Olympiad (IPhO, since 1967; not held in 1973, 1978, 1980)
The International Chemistry Olympiad (IChO, since 1968; not held in 1971)
The International Olympiad in Informatics (IOI, since 1989)
The International Biology Olympiad (IBO, since 1990)
The International Philosophy Olympiad (IPO, since 1993)
The International Astronomy Olympiad (IAO, since 1996)
The International Geography Olympiad (IGeO, since 1996)
The International Linguistics Olympiad (IOL, since 2003)
The International Junior Science Olympiad (IJSO, since 2004)
The International Olympiad on Astronomy and Astrophysics (IOAA, since 2007)
The International Earth Science Olympiad (IESO, since 2007)</p>
<p>from here: [International</a> Science Olympiad - Wikipedia, the free encyclopedia](<a href=“http://en.wikipedia.org/wiki/International_Science_Olympiad]International”>International Science Olympiad - Wikipedia)</p>
<p>These are pretty much the only olympiads US colleges will really consider. </p>
<p>Almost every kid who got into MIT for undergrad from india won a medal at one of these olympiads. So it is highly unlikely (~0% chance) that you will get in without those or without some awesome extracurricular like a revolutionary invention.</p>