You are wrong. See dharampal's note on education. As per british records, in 18th century, in madras presidency, less than 20% of students in schools were brahmins. The rest were non brahmins.
often tambrahm brain is considered
super intelligent by those belonging to the community.
other castes who did not get exposure to education or other oppurtunities are run down
it is a mind set .
some would like to bring out DNA theories to support their their narrow thinking.
sometimes I think they deserve the treatment they are getting in some parts of india