Literature on Social Stories cautions that there is little empirical evidence for their effectiveness. Researchers have called for further investigations to determine the components of Social Stories intervention packages that contribute to their efficacy. Gray has introduced a ratio of sentence types to be used in Social Stories. The present study seeks to investigate if Gray's recommended sentence ratio is an essential component of Social Stories. For this purpose, a 10-Step Social Stories intervention model using Gray's sentence ratio (i.e., a "contextual" Social Story), and one omitting Gray's sentence ratio (i.e., a "directive" Social Story), was compared in teaching social skills to students with ASD. Contextual Social Stories consistently yielded fewer trials to criterion and maintained stable performance at criterion. (Contains 2 figures and 4 tables.)