TESSERACT SCHOOL ANNOUNCES FOURTH ANNUAL MEXICAN MERCADO PARADISE VALLEY, ARIZONA – May 16, 2008 - Tesseract School, a non-profit, independent private school—preschool through eighth grade, with its inaugural ninth-grade class scheduled for fall 2008—announced today that its fourth annual el Mercado de Tesseract will be held on May 23  from 9:00 -11:00 a.m. on the Tesseract campus.  > MORE