School and district officials responsible for assessing the English Language Proficiency (ELP) of newcomer students (those who are new to formal schooling in the United States) face a dilemma with regards to timing and multiple assessments when those newcomers arrive later in the school year. To determine what states are providing in their Every Student Succeeds Act (ESSA) State Plans regarding newly arrived students that come later in the year (beyond the first 30 days of instruction), but need to be assessed for English Language Proficiency, the Center on Standards and Assessment Implementation (CSAI) conducted a scan of fifteen approved ESSA state plans. This update documents how the fifteen states with approved ESSA plans handle the assessment of newly arrived students who enroll late in the school year. It includes each state's definition of ELP, the timing of the state's ELP assessments, as well as statutory language from the U.S. Department of Education regarding these assessments.