PEDUC							     ISCED97	   LIS recode
 10  illiterate									1
 20  self-educated								1
 31  primary: partial								1
 32  primary:graduate								1
 41  junior high:partial							1
 42  junior high: graduate							1
 51  senior high: partial							1
 52  senior high: graduate							2
 61  vocational: partial							1
 62  vocartional: graduate							2
 71  junior coll: partial							2
 72  junior coll: graduate							3
 81  univ or coll: partial							2
 82  univ or coll: graduate							3
 91  grad school: partial							3
 92  grad school: graduate							3