This document provides information on developing intervention and remedial lessons for learners. It defines intervention and remediation as programs aimed at closing gaps between what learners know and what is expected. Assessment results are used to identify weaknesses and design individualized lessons. Both intervention and remediation, also called reteaching, target improving literacy and numeracy through small group or one-on-one tutoring. Lessons should consider learners' abilities and difficulties to help them meet standards through diverse teaching methods.