First, the LAW says "knowingly," so without a map, I do not know. If I have the map, then I know, and my defense against a felony becomes MUCH more difficult.
Having said that, others will chime in with maps they made, ~some~ municipalities have maps, most don't (to my knowledge).
Google ( Madison Schools) for example, and it will give you a map with tear drops by each location. Some may only be administrative in nature thus the school zone wouldn't apply.
Can't REALLY figure it out at all, even the Sheboygan Falls DA couldn't which is why the Hubing (spelling) case got tossed twice, and even the DA admitted WCI ( www.wisconsincarry.org) has a valid point with the Gun Free School Zone (GFSZ) lawsuit.