I work for a Six sigma driven company and to my knowledge there are 3 belts, namely green belt, black belt and master black belt, and the superior one as DC - deployment champion- this prevails in my organization. Preeti: I guess you yourself can be your best judge.. I f you really wanna go for Six Sigma .. I think u can go for green belt along with your PGDM. the foundations will help you in all angles..Again the call is yours. If you think u will be comfortable with the course content and timing . I believe u jump.....