AN INTELLIGENT E-MARKETPLACE FOR SOFTWARE COMPONENTS TRADING The NELS sampled about 23 eighth grade students from each of 815 public and 237 private schools in 1988, following up with portions of this original sample at two-year intervals thereafter. Using a confidential version of the NELS data and school addresses from the CCD and the Private School Survey, I am able to match 700 schools (534 public and 166 private) in the NELS sample to the MSAs in which they are located.
