Over the yearrs jk shah classes has spreaded its branches across many cities in india. and not only spreaded but also thown out the existing competitors. it is not due to their monopoly position in markets of mumbai but due their high quality teaching.
I am not studing at jk shah mumbai but at ahmedabad but almost faculties visits from mumbai and teaches us. their way of teaching and perfection is just excellent.
test series and regular doubt solving procedure is also very good