Indiana Code Title 20. Education § 20-23-16-1

Sec. 1. If a united school corporation is created from existing school corporations that are each entirely located in one (1) county, the county committees of the counties in which the school corporations are located shall jointly prepare a plan for the united school corporation.  For the purpose of submission to the state board, the plan shall be included in the comprehensive plan of the county that has the largest number of students residing in the proposed united school corporation.  If an existing school corporation from which a united school corporation is created contains territory in two (2) or more counties, the county committee of the county containing that part of the school corporation that has the most students shall include the entire corporation in its plan in the absence of a written agreement with the county committee of the adjoining county to the contrary.