The 2016-2017 State of Preschool survey included supplemental questions intended to shed light on state policies to support dual language learners (DLLs) in state-funded preschool. This is the second time a dual language supplement has been collected; the first was in 2014-2015. While many questions included in this second survey were asked two years ago, others were added, revised, or deleted to provide a clearer portrait of state preschool program policies that specifically relate to DLLs. (author abstract)