The current study examines the bilingual language development of twelve young children. We focus on the use of Spanish as a heritage language among the children while they learn English in an English-majority environment. Data was collected in English and Spanish four times over the first two years of formal schooling. The study focuses on oral language production in Spanish and English using several language-eliciting tasks including vocabulary identification and picture storytelling. Results demonstrated improvement in English oral fluency, vocabulary, and grammatical complexity over the two-year period, as expected. Most of the children maintained roughly the same scores on Spanish vocabulary identification and oral fluency over the same timeframe. The study shows that retention of the first language (L1) is achievable even by children living in English-majority neighborhoods.