Indiana K-12 teacher evaluations were lawfully mandated by Public Law (PL) 90 in 2012. PL 90 required all public-school teachers to be rated annually by their administrators using a state approved teacher evaluation rubric. Teachers were evaluated as highly effective, effective, needs improvement, and ineffective. Student achievement and growth on standardized state tests and classroom observations comprised about the majority of the overall evaluation rating. Only teachers in the highest two categories, highly effective and effective, were considered for pay increases by their schools the following school year. Nationwide, K-12 teacher dissatisfaction and shortages have increased providing an excellent platform to closely examine decades old mandates, such as PL 90, and its current impact on teachers and administrators. A quantitative descriptive research study was used to analyze Indiana teachers and administrator perceptions on the teacher evaluation process a decade after PL 90 was passed in 2012. A sample of 1,886 teachers and 182 administrators from Indiana's public schools participated in an anonymous survey to provide a clear indication of PL 90's impact on Indiana's teachers and administrators in 2023. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]