The National Assessment of Educational Progress (NAEP) includes a term trend" study that tracks reading and mathematics skills over time, and obtains demographic information. In the 2012 study, a random sample of 9000 17-yearold students was selected.24 The NAEP sample used a multistage design, but the overall effect is quite similar to an SRS of 17-yearolds who are still in school. In the sample% of students had at least one parent who was a college graduate. Estimatewith 99% confidencethe proportion of all 17year-old students in 2012 who at least one parent graduate from college

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