Kauffman, who started teaching math at Ladue High School in 1961, has earned an outstanding teaching award from the University of Chicago and is listed in "Who's Who Among America's Teachers."
All 30 winners, one representing each club, will be included in the All-Star Week activities and will be recognized during a ceremony prior to Tuesday's game.
Jenifer Langosch is a reporter for MLB.com. Read her blog, By Gosh, It's Langosch, and follow her on Twitter @LangoschMLB. Alex Halsted is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.