Overview
During the 2021–2022 school year, Oklahoma City Public Schools implemented the Reading Horizons Discovery® curriculum across 155 K–4 classrooms.
The RH method’s implementation integrity, as measured by the classroom observation scores on the RHIIR, was statistically significant and showed small to large effects (Cohen’s d ranged from .445 to .944) on outcomes for all grades, controlling for demographics. Substantial effects of observer ratings on decoding scores over time were identified for kindergarten students.
Outcome
Meets ESSA Evidence Tier 3 – Promising Results
Third-Party Research Partner:
Elite Research
Instruction Type:
Tier 1 (Whole Class)
Program:
Reading Horizons Discovery®
