Al Letson en A Year Without Mexican-American Studies In Tucson An Arizona law that went into effect last year essentially ruled that the Mexican-American studies program offered in the Tucson public school system was divisive and should be scrapped. At the end of the first semester without the classes, hard feelings still linger.<p>For eight years, until this past January, Lorenzo Lopez taught Mexican-American studies at Cholla High in Tucson, Ariz., the very school from which he graduated in 1992.<p>After high school, Lopez spent a couple years working odd jobs as a miner and a factory worker; anything to pay the bills. Sun, 24 Jun 2012 10:29:00 +0000 Al Letson 14502 at