Hornberger, Nancy H2023-05-222023-05-222005-01-012015-11-03https://repository.upenn.edu/handle/20.500.14332/35073This is the accepted version of the following article: Hornberger, N. (2005). Opening and filling up implementational and ideological spaces in heritage language education. Modern Language Journal, 89(4), 605-609, which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/j.1540-4781.2005.00331.x/abstractLanguage and LiteracyPolicy and AdministrationTeaching and LearningBilingual, Multilingual, and Multicultural EducationCurriculum and InstructionEducationEducation PolicyInternational and Comparative EducationArticle