Unless this was a case specifically related to the field your degree is in or there are a very limited number of people with college degrees in your area, I doubt that was the full story.

Having a degree is not an attribute that you can be dismissed "for cause" for, and the attorneys have a limited number of preremptory challenges available. At least in my area, where > 50% have college degrees, if they tried to strike everyone with a college degree they wouldn't have a jury pool left.