At the request of Pioneer Valley Books, JEM & R reviewed the evidence base behind In Tandem, Phonics Launch, and Stepping Together. These reviews summarize how all three meet the Every Student Succeeds Act (ESSA) Tier 4 standards.
Research Study Overview: Evaluation of Pioneer Valley Books' In Tandem [PDF]
Research Review: In Tandem [PDF]
Research Review: Phonics Launch [PDF]
Research Review: Stepping Together [PDF]