Q71. How old were you when you had sexual
                  intercourse for the first time?
                     Weighted Column Percents
 ----------------------------------------------------------------
                           Total               Grade
                                  -------------------------------
                                    9th    10th    11th    12th
 ----------------------------------------------------------------
 I have never had sexual
    intercourse              64.9    76.5    67.5    60.0    49.2
 11 years old or younger      2.5     3.1     2.7     2.1     1.8
 12 years old                 2.3     3.0     2.5     1.8     1.8
 13 years old                 4.1     5.3     4.3     3.2     2.9
 14 years old                 7.9     8.8     8.5     7.3     6.5
 15 years old                 8.9     3.1    11.1    11.6    11.4
 16 years old                 6.3      .2     3.2    11.6    13.6
 17 years old or older        3.1      .0      .2     2.5    12.7
 Female
   I have never had
      sexual intercourse     64.6    78.5    67.3    58.6    46.8
   11 years old or
      younger                 1.5     1.9     1.5     1.2     1.2
   12 years old               1.7     2.0     2.0     1.4     1.3
   13 years old               3.9     5.1     4.4     2.9     2.6
   14 years old               8.5     8.8     9.1     8.1     7.6
   15 years old              10.2     3.5    12.6    13.0    13.5
   16 years old               6.6      .2     2.9    12.9    14.1
   17 years old or older      3.0      .0      .2     1.9    13.0
 Male
   I have never had
      sexual intercourse     65.1    74.3    67.7    61.5    51.7
   11 years old or
      younger                 3.5     4.4     3.9     2.9     2.5
   12 years old               3.0     4.1     2.9     2.1     2.4
   13 years old               4.3     5.6     4.3     3.6     3.3
   14 years old               7.3     8.8     7.8     6.4     5.3
   15 years old               7.7     2.7     9.7    10.1     9.3
   16 years old               5.9      .1     3.5    10.2    13.1
   17 years old or older      3.2      .0      .2     3.1    12.4
 ----------------------------------------------------------------
                            Total N =
                              30,503

 
             Q71. How old were you when you had sexual
                  intercourse for the first time?
                      Unweighted Frequencies
 ----------------------------------------------------------------
                           Total               Grade
                                  -------------------------------
                                    9th    10th    11th    12th
 ----------------------------------------------------------------
 I have never had sexual
    intercourse            19,307   6,775   5,570   4,118   2,844
 11 years old or younger      841     317     243     154     127
 12 years old                 741     290     215     127     109
 13 years old               1,360     523     386     243     208
 14 years old               2,533     847     734     525     427
 15 years old               2,804     319     972     825     688
 16 years old               1,962      16     281     833     832
 17 years old or older        955       1      15     199     740
 Female
   I have never had
      sexual intercourse    9,844   3,560   2,805   2,082   1,397
   11 years old or
      younger                 261     105      74      44      38
   12 years old               299     110      87      58      44
   13 years old               662     259     189     113     101
   14 years old             1,388     445     395     302     246
   15 years old             1,648     184     564     483     417
   16 years old             1,061      10     129     480     442
   17 years old or older      475       0       8      82     385
 Male
   I have never had
      sexual intercourse    9,463   3,215   2,765   2,036   1,447
   11 years old or
      younger                 580     212     169     110      89
   12 years old               442     180     128      69      65
   13 years old               698     264     197     130     107
   14 years old             1,145     402     339     223     181
   15 years old             1,156     135     408     342     271
   16 years old               901       6     152     353     390
   17 years old or older      480       1       7     117     355
 ----------------------------------------------------------------
                            Total N =
                              30,503