The ILEARN Performance Level Descriptors (PLDs) reflect the learning path for each standard based on students’ natural progression of skills and levels of thinking for specific content. These learning progressions should be used to assess and teach students at various developmental levels. The ILEARN PLDs present learning progressions for each assessed standard. They are divided into four “buckets” in alignment with the ILEARN proficiency levels: Below Proficiency, Approaching Proficiency, At Proficiency, and Above Proficiency.