Modified Allen Instruction is a type of structured instruction that is used to teach students with mild to moderate intellectual disabilities. It is based on the original Allen Cognitive Level Screen (ACLs) by Janet A. Allen, which is an individual assessment tool used to determine a student's ability to learn. Modified Allen Instruction is a systematic approach that combines the use of task analysis and cognitive levels in order to teach a specific skill. It focuses on breaking a task down into smaller, achievable steps and teaching each step in order for the student to gain mastery of the task. There are two main types of Modified Allen Instruction: direct instruction and indirect instruction. Direct instruction consists of structuring the environment, modeling, prompting, and providing feedback in order to foster the student's learning of the skill. Indirect instruction consists of providing an opportunity for the student to explore the task on their own and facilitating their learning through providing feedback and reinforcement.