Public school districts are government entities, but they rely on the private sector to support their function of delivering educational services to students. Private contractors, for example, construct district buildings, write textbooks and manufacture the supplies necessary to keep the district operational, among other things. And over the past several years, there has been a slow and steady increase in the number of school districts tapping the private sector to perform services that were once performed directly by district employees. The results of the survey presented in this report show that 70.1 percent of districts in Michigan use private sector contractors to provide food, custodial or transportation services--a slight increase from last year's findings. These supporting operations are performed by an array of businesses, some even specialize in providing services to public schools. This is the 14th edition of this survey of school districts, which has been performed in 2001, 2003 and every year since 2005. It has documented a steady increase in contracting out, from 2001 when 31 percent of districts contracted out services to the more than 70 percent today. Also, it found that districts rarely contracted out custodial and transportation services when the survey began. Now more than half of districts use private vendors to provide custodial services and more than a quarter contract out transportation services. The following are appended: (1) Revisions to Previous Publications; and (2) Map of Survey Findings by School District.