PEDUC							     ISCED97	   LIS recode
  1  no education (does not know how to read and write)				1
  2  no education (but knows how to read and write)				1
  3  primary education (1-4 classes)						1
  4  secondary education (5-8 classes)						1
  5  secondary education (9-12 classes)						2
  6  professional studies (1-4 years)						2
  7  technical and apprenticeship (1-2 years)					2
  8  technical training for formen						2
  9  post secondary specialized education					2
 10  short-term higher education						3
 11  long-term higher education							3