Ross School of Business at the University of Michigan has an ESL program for MBA students that starts at the end of July. I think the price is very reasonable, but you should check to see if they let people from other schools participate.
I got admit from Purdue. I am international student and I think I dont have enough confident about my english proficiency. Purdue does not have any ESL course offer during summer. Could you please recommend any school or any course teaching ESL for MBA students?
GO BLUE !!!