This link has already been posted in 3 other threads... But for that matter there is more to the quote you misssed:
Notably absent from Fox's announcement was any mention of the law that makes it a felony to possess a gun within 1,000 feet of a school. A gun rights advocacy group, Wisconsin Carry Inc., and some individuals challenged the constitutionality of that law this year in federal court. They contend the 1,000 foot perimeter is generally impossible to determine, and that in populous areas such as Milwaukee County, there are so many schools that the overlapping zones would effectively prohibit someone from carrying a gun at all.
"I think it had to be an oversight," said Nik Clark, president of Wisconsin Carry.
"We totally support what he said. But if it doesn't include school zones, then it's all meaningless."
Fox said it would never occur to him to prosecute that crime, but he's never seen an arrest for it anyway. He agreed that it would probably not withstand constitutional review, either.