Using a model developed by the Illinois Community College Board (ICCB), William Rainey Harper College (WRHC) conducted a study to determine the economic impact of the school on its community by its presence, the business it transacts, the employees it hires, and the students it attracts to the campus. Data, gathered from a variety of college and community sources, were compared with data from six other community colleges in Illinois which have piloted the economic impact model. Selected study findings include the following: (1) for every dollar of local tax revenue raised by the college, $6.25 was generated in college-related business, $5.00 was produced in value of local business property, $1.33 was channeled into expansion of local bank credit base, and $3.00 of personal income was produced; (2) 2,816 full-time jobs existed as a result of WHRC; (3) $2.7 million of outside government money, including benefits and grants paid directly to students, was channeled directly into the community; (4) more than 12% of the adult population has been enrolled each year at WHRC; (5) approximately 45,000 community residents came to the campus for cultural arts events or to use college facilities or services. Data tables contrasting the economic impact figures for WHRC with those for the College of DuPage and with an average calculated for six additional Illinois colleges are included. Work pages from the ICCB-produced handbook are appended. (Author/AYC)