The boards of trustees of an agricultural high school, or agricultural high school and junior college, or any municipal separate school district, and the county board of education, in the case of other school districts, are authorized and empowered to exercise the right of eminent domain, for the purpose of acquiring property to be used for school and playground purposes. However, the rights of eminent domain created hereunder shall not be used for the condemnation of the property of any school or college whatsoever, either private, fraternal, sectarian or denominational.