The purpose of this research was to examine how teacher disposition affects student academic performance through the validity and reliability of a quantitative inventory instrument: The Teacher Dispositions Index [TDI] that measures the dispositions of effective teachers specified by the Interstate New Teacher Assessment and Support Consortium.

This paper discusses the implementation of the Tri-Squared Test as one of many advanced statistical measures used to verify and validate the outcomes of an initial study on academic professional's perspectives on the use, success, and viability of 9th Grade Freshman Academies, Centers, and Center Models. The initial research investigation…