FRAMINGHAM — An educator with local ties has been selected to lead Stapleton Elementary School effective July 1, the district announced Thursday. Sara Costa Yuen is currently principal of the Phoenix Charter Academy in Chelsea, where she also served as a math and English language arts teacher. She also was a program director for the nonprofit Portuguese language school of the MetroWest Mission Hub (ProGente Connections). Yuen also taught social studies in the Lawrence school district. "I had the pleasure of working in Framingham several years ago and very much look forward to returning to the city... As a member of the Brazilian community and a Portuguese and Spanish speaker, I seek to ensure that all families feel included in the life of the school," she said in a statement.