Primary Thinking Skills (PTS) is a program implemented in all second grade classrooms by Gifted and Talented Resource Teachers.  It uses elements of Primary Education Thinking Skills (PETS), a thinking skills program published by Pieces of Learning, as well as, teacher-designed lessons.  Its purpose is to expose all students to higher level thinking skills and to serve as a diagnostic tool for recognizing students who demonstrate strengths in the thinking skills presented. This data is used as part of the identification process beginning at the end of grade 2.