Nigerians amongst 8 superior groups of Superior people in the US

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 Writer Amy Chau, who gained notoriety 2 years ago as 'Tiger Mum' after publishing her controversial book 'Battle Hymn of the Tiger Mother" where she claimed that Chinese mums make the best parents and ultimately have more successful children, is back in the news.
Chau and her husband, Jed Rubenfeld, just released a controversial (and some say racist) parenting guide called 'The Triple Package', where they declared there to be only eight successful and superior groups of people in the US. 
They eight are: Chinese, Jewish, Indian, Iranian, Lebanese-Americans, Nigerians, Cuban exiles and Mormons