Frequencies for first 10,000 rows of d_edu variable in mcbsatc2013 dataset :

    Highest |
      grade |
  completed |      Freq.     Percent        Cum.
------------+-----------------------------------
         -8 |         34        0.34        0.34
         -7 |         23        0.23        0.57
          1 |      2,177       21.77       22.34
          2 |      3,569       35.69       58.03
          3 |      4,197       41.97      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 24 May 2016