The school began to admit hearing siblings, and then other hearing children in the area of the school were admitted to Humble Hearts to promote inclusion. By the end of 2006, there were 300 students. In addition, KSL classes were offered to parents and others in the local community.
As the school's mission evolved, it began to admit siblings with hearing impairments, followed by other children from the neighborhood who also had hearing difficulties. By the end of 2006, Humble Hearts had grown to a diverse student body of 300 students. Additionally, KSL classes were made available to parents and community members.