PEDUC							     ISCED97	   LIS recode
  0										9
  1  did not complete primary							1
  2  primary education								1
  3  second level, lower cycle tech/voc						1
  4  second level, lower cycle gen ed						1
  5  second level, upper cycle, tech/voc					2
  6  second level, upper cycle, gen ed						2
  7  non-univ. higher education 						3
  8  university									3
  9  other									9