This brief explores the potential of bilingual programs to support access to core content courses for students classified as English Learners (ELs). The most common types of bilingual education programs in Oregon are: (1) dual language: instruction is in English and a partner language, with goals of biliteracy and bilingualism. This is also known as a two-way immersion program; and (2) transitional: students' home language is used as a temporary bridge, with the goal of transitioning to instruction in English. Because definitions have changed over time, the analyses in this brief include enrollment in any type of bilingual program. Bilingual programs are much more common in elementary school. In 2018/19, 23% of Oregon elementary students classified as ELs were enrolled in bilingual programs, compared to 6% of EL-classified students in middle and high school. Therefore, this brief analyzes how "past participation" in bilingual education relates to core content course enrollment in middle and high school. Analyses include students whose records were traced back to kindergarten.