This issue of The Science Teacher (TST) represents our 13^th consecutive annual issue devoted to the theme “Science for All.” The theme serves as an umbrella for ideas and strategies to mitigate academic achievement gaps associated with ethnicity, socioeconomic status, gender, physical disabilities, limited English language ability, and learning differences. Ideas for reaching out to underrepresented groups are more important now than ever, as our classrooms become increasingly diverse. Despite some gains, significant disparities in achievement are still a major challenge for educators and schools.