John Matthews, longtime head of Madison teachers union, to retire in January
![John Matthews, longtime head of Madison teachers union, to retire in January](http://bloximages.chicago2.vip.townnews.com/lacrossetribune.com/content/tncms/assets/v3/editorial/a/1c/a1c7538e-5b55-5a99-85e2-86dadd691203/56716bcf8e538.image.jpg?resize=300%2C200)
John Matthews, the hard-charging executive director of the union that represents Madison public school teachers and possibly the longest-serving teachers union head in the country, will retire…