Property taxes are a bit lower in wisconsin (or a LOT lower, depending) but the income tax is higher. In general, though, we really love Wisconsin too. Not all the schools are great, though. Kenosha schools are struggling, from what I understand. If you're willing to make a big move, up into Milwaukee suburbs or even Madison you'll find some really high quality public schools. (All my knowledge of these schools, though, is just on paper...er screen. I don't personally know any gifted children working with these school districts.)

Good luck! I know how difficult these decisions are!!