OG+

Product or Programme · All products and programmes
Evidence · 2 claims (1 for, 1 mixed) · 3 studies (2 quant-synthesis, 1 causal), q2–q4 · 3 of 3 report an effect size · 1 claim rests on one study

Description

IMSE's OG+ is a Structured Literacy foundational-skills curriculum developed by the Institute for Multi-Sensory Education (IMSE) for whole-class, small-group, and one-to-one reading and spelling instruction in grades K–5.

Components

• IMSE's OG+ Structured Literacy foundational skills program: IMSE's OG+ is "a Structured Literacy core foundational skills program based on Orton-Gillingham principles" for whole-class, small-group, and one-on-one reading and spelling instruction in grades K–5. It uses multimodal techniques to build phonological awareness, phonics, fluency, vocabulary, and comprehension, and is implemented as the foundational skills component of a school's literacy block with lessons following "a consistent, cumulative progression." (IMSE's OG+ (Evidence Rating: Moderate) (2023))

Claims

• IMSE's OG+ improves early literacy outcomes in grades K–3, with effect sizes of +0.33 and +0.21 across two quasi-experimental studies [+M]
• Phonics instruction has a small but statistically confirmed effect for children with reading disabilities, while Orton-Gillingham structured-literacy programs show positive but non-significant effects [~W]

Related Products and Programmes

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Key Sources

• IMSE's OG+ (Evidence Rating: Moderate). (2023). https://www.imse.com

Page metadata

Field	Value
type	product
id	og
title	OG+
description	IMSE's OG+ is a Structured Literacy foundational-skills curriculum developed by the Institute for Multi-Sensory Education (IMSE) for whole-class, small-group, and one-to-one reading and spelling instruction in grades K–5.
status	review
moved_from	element/imse-og-plus-program
product_kind	curriculum
generated	by process:sweep-kinds on 2026-10-10
trust	unverified — no one has confirmed this page's content
sources	1 — imses-og-evidence-rating-moderate-2023

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