From Materials and Methods of Teaching the Gifted (3rd edition):
Studies of the model do not include effectiveness data (Meeker, 1976); rather, they primarily focus on findings for its use as identification criteria, as a means for organizing information about a gifted child, or as a means for overall program design.
(note about its use with multi-ethnic and disadvantaged children)
Although now somewhat dated, SOI offered a means of understanding children students by delineating profiles of their intellectual abilities. It contained a teacher training component that used teacher modules designed to train one SOI ability at a time. Training materials included mini-lesson plans for group teaching and self-help modules for individualized instruction with selected students (Meeker, 1969).
