correct English?

This is a question that I am getting asked more and more often recently...is that correct ?
When I was 11 my I started at a convent boarding school thinking it would be like the tales from Enid Blytons Mallory Towers .She is a well known writer of children's stories.More information can be found herewww.enidblytonsociety.co.uk. At my new school I was all excited at the idea of midnight feasts and jolly japes....sadly the nuns at my Irish convent school had very different ideas to mine.Their main priority for me was elocution lessons as they wanted to 'knock that dub accent out of me'(dub=strong south Dublin accent.) and so that they could teach me how to speak correctly as they saw it.
So there I was ,age 11 ,in the middle of a bog in the middle of no where speaking perfectly modulated 'queens English'.....has it done me any good?Is it that important?The answer is that yes it has done me some good and yes it has some importance for some people.Its important to me now because I teach English to non native speakers .Its important to my students as they see it as a key to unlocking a better and possibly a more affluent future.Its all tied up to money.For me and for them.
But its quite amazing really that a country such as England and its language has had such a long standing impact on those from other places.Its a particular way of speaking and not just the language that students wish to learn.A larger amount of students prefer to have a British English speaker rather than a American English speaker as a teacher.In India you have people speaking with the most middle class tones (in perfect English ,grammatically correct ) but still living in huts or very poor conditions and  they aspire to something wonderful in their future lives and 'English' is the key!