Lexia Reading Core5 is an online, supplemental reading program for grades PK-5 that includes some print materials. Learning List recently reviewed Core5 products for grades K-5. The data-driven program provides differentiated instruction to help close reading gaps and ensure all students become proficient readers. Core5 combines individualized, adaptive, technology-based lessons with teacher-led direct instruction to meet the needs of students below, at, and above grade level. The program supports Response to Intervention (RtI) at each tier.