SDI stands for Specially Designed Instruction. It is anything specific and unique to your child–determined by their areas of need, to help them access their education. It is based on the evaluations done on your child, to determine their areas of need. SDIs are used to help your child achieve the goals listed in the IEP. Most SDIs should be applied across all environments, not in just one class or classroom. They are adaptations or modifications to the regular curriculum. SDIs are in place to help your child reach their IEP goals and objectives.