H1B stamped But got acceptance letter from Business School

I got my H1B stamped VISA a month back Now also I got an acceptance mail from IE Business school (in SPAIN) and Smurfit Business school(Dublin,Ireland). Now if I quit company then employer will cancel my H1B my question is after my graduation If I again apply for H1B then shall I face any issue(like denial etc) as my employer cancelled H1B stamped VISA earlier?

Please help

Normally employer will not go for cancellation. There is some cost involved in it.If at all they did also that is not a problem. they can cancel only your petition Not your visa. Still you can go for transfer this with some other employer after two years. No need for new petition after your graduation.