To comply with Section 1111(e) of the Elementary and Secondary Education Act (ESEA) as amended by the Every Student Succeeds Act (ESSA), states are required to submit evidence associated with their assessment systems to the United States Department of Education (ED) for peer review. Thirty-eight states submitted evidence for their assessment systems to the peer review process in 2016. As of May 2017, ED has issued thirty-seven decision letters in response. The peer review process requires cohorts of trained experts to evaluate state-submitted evidence as it relates to a number of established criteria, organized by and divided into Critical Elements (CEs). Each decision letter outlines the CEs for which states must submit additional evidence to meet the statutory and regulatory requirements for standards and assessment based on peer review feedback on state-submitted documentation. This report looks at the CEs for which many states have been required to submit additional evidence across high school assessments for reading/language arts (R/LA) and mathematics, grades 3-8 assessments for R/LA and mathematics, and alternate assessments. Lessons learned from high school and grades 3-8 science assessment feedback are also included in this update.