Physics First
Physics First is an educational program that teaches a basic physics course in the ninth grade (usually 15-year-olds), rather than the biology course which is more standard in public schools.
American public schools traditionally teach biology in the second year of high school, chemistry in the third, and physics in the fourth. The belief is that this order is more accessible, largely because biology can be taught with less mathematics, and will do the most toward providing some scientific literacy for the largest number of students.
Proponents of Physics First argue that turning this order around lays the foundations for better understanding of chemistry, which in turn will lead to more comprehension of biology.