Believe me, if you got a high IELTS score, Harvard would accept
it. The same with a high TOEFL score and Oxford. Why? Because they know what we
know: The TOEFL v. IELTS issue is a non issue, academically. It's just two
companies protecting their respective markets.
But, you ask, what about British v. American English? That too is
a non issue. The difference between these two dialects is negligible; moreover,
the subtle distinctions between British and American English don't even enter
the equation as far as testing is concerned. Instead, it's all about argument
development. Why? Because the British educational system is built on Greek
rhetoric, so is the American educational system.
REMEMBER: Before you take either test, contact the school or agency to
which you are applying. See which test they prefer, and play the game.
REMEMBER: If you are planning to apply to an American school, the question
you really should be asking is: Should I take the TOEFL iBT or the TOEFL PBT?
The Pro