On average, students receiving Special Educations services who received Visualizing and Verbalizing instruction achieved significant improvements in comprehension. They made large (statistically significant) standard score changes on two of the three measures. Additionally, the 13-point percentile increase in Written Language Comprehension, a large (statistically significant) standard score change, put these students in the normal range (25th–75th percentile).
Results of SPED Students Who Received Comprehension Instruction Only
Years: Jan. 2008 – Sept. 2021
Number of Students: 1,679
Average Age: 12.8
Average Hours of Instruction: 121.6
Lindamood-Bell Instruction Implemented: Visualizing and Verbalizing