The document discusses different grouping models for gifted and high-achieving students, including cluster grouping and flexible grouping. Cluster grouping involves placing 5-8 identified gifted students together in a mixed-ability classroom taught by a teacher with special training. Flexible grouping allows temporary ability-based grouping within classrooms. The benefits of these models include allowing teachers to better meet student needs and challenge gifted learners. Effective implementation requires teacher training in differentiation strategies.