Preschool Life Skills (PLS) is a research-based, supplemental curriculum that provides a set of tools to help teach important social and life skills for school success. The PLS program includes a set of lessons developed by Dr. Gregory Hanley and colleagues to increase skills in making requests, following directions, tolerating delay, and developing friendships. Several research studies demonstrate the effectiveness of the PLS program across various types of early childhood settings with increases in positive social behaviors and decreases in challenging behavior for children both with and without disabilities.