Mich. Comp. Laws § 380.554
If a school district or intermediate school district applies for and obtains a contract to operate 1 or more schools of excellence under this part, the power of the school district or intermediate school district to levy taxes for any purpose under this act is not affected by the operation of a school of excellence by the school district or intermediate school district. Revenue from taxes levied by a school district or intermediate school district under this act or bonds issued by a school district or intermediate school district under this act may be used to support the operation or facilities of a school of excellence operated by the school district or intermediate school district in the same manner as that revenue may be used under this act by the school district or intermediate school district to support school district or intermediate school district operations and facilities. This section does not authorize a school district or intermediate school district to levy taxes or to issue bonds for any purpose that is not otherwise authorized under this act.
MCL 380.554