Indiana Code Title 20. Education § 20-26-13-16

Sec. 16. In addition to any other determination required under this chapter, the department shall determine and report a statewide graduation rate that is consistent with guidelines developed by the National Governors' Association.  If the guidelines are unclear or allow flexibility in determination, the requirements of this chapter apply to the determination of a statewide graduation rate.  However, cohort members who leave after less than one (1) year of attendance in an Indiana school and whose location cannot be determined may not be subtracted in the calculation of a statewide graduation rate.