Gifted students' learning gains result from complex, advanced, and meaningful content provided by a knowledgeable teacher through high-quality curriculum and instruction at an appropriate pace with scaffolding and feedback. These elements exert influence that increases with dosage and within structures that facilitate student engagement in rigorous experiences, including interactions with one another. Talent development is a two-part process. First, educators and parents must provide opportunities for talent to surface, and then they must recognize the talent and provide educational opportunities that engage the emerging talent and move it to exceptional levels. Unfortunately, a variety of barriers exist that limit underserved students' participation in this process. We discuss these barriers within a proposed model of talent development. [This paper was published in "Journal for the Education of the Gifted," v39 n2 p103-131 Jun 2016 (EJ1101173).]