This manuscript reports the results of two pilot studies that investigated the views of international cohorts of teacher educators regarding the efficacy of the flipped classroom paradigm in K-12 schools. A void in the literature addressed by each pilot study was the relevance of flipped classrooms to student subgroups requiring specialized instruction (e.g., students with disabilities). In the first study 107 teacher educators (58% response rate) from 38 countries completed a 12-item survey designed to determine their views on the efficacy of flipped classrooms. Respondents reported flipped classrooms are efficacious for elementary and secondary students, as well as those who are culturally and linguistically diverse -- particularly with respect to teaching complex subjects (e.g., science). Conversely, respondents reported the paradigm is inappropriate for students with disabilities, and that noteworthy barriers (e.g., a digital divide) impede its use with students in impoverished rural communities. In the second study 104 teacher educators (61% response rate) from 33 countries completed a 10-item survey designed to determine their views about the appropriateness of the flipped classroom paradigm for students with learning and/or behavioral challenges. Both studies are a measure of the paradigm's face validity, particularly with respect to certain student subgroups. [For the full proceedings, see ED626668.]