Within the US Department of Education's new flexibility initiative, there are three key principles, each with areas of focus. The third of these is that State Education Agencies (SEAs) must develop and implement systems of determining and supporting effective instruction and leadership within schools. This brief looks at websites, documents, and resources produced by nationally-known organizations, federally-funded centers, research centers, and similar entities to identify resources that focus on supporting effective instruction and leadership for English Learners [ELs]. There were four specific focus areas identified for inclusion: how English learner [EL] growth (language, content, or both) is considered in teacher evaluations, the evaluation of EL specialists (e.g. ESL teachers), the evaluation of content area teachers who have ELs in their classes, and the differences in teacher evaluations between elementary and secondary teachers, who teach ELs. This document provides an annotated bibliography for the resources that focused on ELs. For each resource, there is a full citation, a URL, and an annotated bibliography; if there are specific pages in which ELs are discussed, those page numbers are noted. Links to electronic copies of documents are provided when available. (For "Flexibility Principle 1: College- and Career-Ready Expectations for All Students," see ED564258. For "Flexibility Principle 2: State-Developed Differentiated Recognition, Accountability, and Support," see ED564256.]