ALL students are eligible to attain the Seal of Biliteracy based on evidence of achieving the designated level of language proficiency in English plus one or more other languages during their high school years. Students must demonstrate the state-determined level of proficiency in English, as well as one or more additional languages, be that language a native language, heritage language, or a language learned in school or another setting. Schools, districts, or states are encouraged to provide other forms of recognition prior to high school reflecting progress along the pathway toward achieving the specified level of biliteracy, which may occur earlier (as with immersion, two-way or dual language immersion programs; English language learners; and other populations). The focus is on achieving the level of proficiency required for English and the level of proficiency required for one or more other languages. Biliteracy refers to having a functional level of proficiency in each language: The level of proficiency is not necessarily identical for both languages.