PEDUC							     ISCED97	   LIS recode
  0  no formal education							1
  1  1 year school								1
  2  2 years school								1
  3  3 years school								1
  4  4 years school								1
  5  5 years school								1
  6  6 years school								1
  7  7 years school								1
  8  8 years school								1
  9  9 years school								1
 10  10 years school						3A		2
 11  11 years school						3A		2
 12  professional courses: tractor driving, typing,accounting			1
 13  vocational education without secondary school		3C		2
 14  vocational education with secondary education		4C		2
 15  technical, medical, music, pedagogical art school		5B		3
 16  institute, university, academy				5A		3
 17  graduate school						6		3

REMARK about recoding :
Source: UNESCO/ World Education Forum (ISCED97).
Code 12 is a little unclear but does not seem to correspond to any 
formal education (according to documentation received from the RLMS team).