PEDUC							     ISCED97	   LIS recode
  1  no diploma									1
  2  primary school 								1
  3  special primary school 							1
  4  lower secondary vocational education 					1
  5  lower secondary technical education 					1
  6  lower secondary general education 						1
  7  special secondary education 						1
  8  higher secondary vocational education 					2
  9  higher secondary technical education 					2
 10  higher secondary general education 					2
 11  higher non-university (2-3 years) 						3
 12  higher non-university (4 years) 						3
 13  university 								3
 14  other									9