Effectiveness for English Learners
While Word Generation is designed to be used with all students and taught by general education teachers, results from prior studies in classrooms with a significant portion of EL students demonstrated larger gains on average for EL than for non-EL students.
The particular value of the WordGen model for ELs, former ELs, and students from language minority homes has been studied in various contexts. Snow, Lawrence and White’s (2009) quasi-experimental study found that language minority students in WordGen schools acquired academic vocabulary faster than their English-only classmates or than language minority students in control schools. Furthermore, their advantage persisted in a follow-up assessment a year after instruction had ended (Lawrence, Capotosto, Branum-Martin, White, & Snow, 2012). Hwang, Lawrence, Mo, and Snow (2014) reported a similar vocabulary learning advantage for newly reclassified ELs over English-only classmates in an experimental study of WordGen; that advantage declined but remained significant for up to four years after reclassification, an effect replicated for reading comprehension.
Perspective Positioning
These WordGen bonus effects for second language speakers of English are reminiscent of the finding that exposure to WordGen reduces the commonly reported predictive relationship between initial academic vocabulary and improvement in either general vocabulary or reading comprehension at the school level. In other words, schools scoring low on academic vocabulary typically also show slower vocabulary and reading growth, but that effect is mitigated in schools implementing WordGen, suggesting its extra value for students in underperforming schools. In addition to differences in vocabulary learning, as the figure indicates, ELs scored far behind non-EL students in their ability to distinguish and explain different perspectives in a text in schools not using Word Generation. In Word Generation classrooms, however, English learners substantially narrowed (and almost eliminated) the gap.