Although the instructional content is the same, the SIPPS® program comes in two forms, each with grade-appropriate materials.

SIPPS® Intervention for K–3 includes Beginning, Extension, and Challenge Levels.

SIPPS® Intervention for 4–12 includes SIPPS® Plus and Challenge Level. (SIPPS® Plus delivers the instructional content of Beginning and Extension Levels while using reading materials of interest to older students.)

Optional libraries provide age-appropriate collections of books for readers who have mastered phonics skills.