When we look at physics offerings by socioeconomic profile of the school, we do not find dramatic differences in the number of seniors enrolled at each type of school; the number of physics teachers is also fairly evenly distributed. About one-third of the seniors and one-third of the physics teachers are at each type of school. However, there are significant differences in the number of physics classes and physics students by socioeconomic profile of the school. The nature of these differences means that teachers who teach physics at better-off schools are able to specialize in physics more easily, while those who teach at worse-off schools likely teach more classes in subjects outside physics.