In 2026, the 8th-grade biology curriculum in the United States focuses on foundational concepts of life sciences, including cell biology, genetics, human body systems, and environmental biology. Students learn about the structure and function of cells, Mendelian genetics, the human body's organ systems, and the impact of human activities on ecosystems.

The emphasis on these topics is due to the National Science Education Standards, which outline the knowledge and skills students should acquire by the end of 8th grade. According to the National Center for Education Statistics (NCES), the curriculum aims to ensure that students develop a conceptual understanding of biological processes and the interdependence of living organisms with their environment. This approach is supported by research indicating that a strong foundation in biology at the middle school level is crucial for future success in advanced science courses and career paths related to the life sciences.