Recoding was not carried out.
The education variable was asked to 1 person per household only (mostly
 the head , less frequently the spouse).

If LIS users want to pursue a recode they may do so on their own responsability.
The mapping below may serve as suggestion. 
 
PEDUC							     ISCED97	   LIS recode
 -1  not asked / not head							9
  1  illiterate									1
  2  without formal education							1
  3  basic education								1
  4  primary education								1
  5  secondary education							1
  6  technical secondary							2
  7  pre-university level							2
  8  university level								3

REMARK about recoding :
There is an unlikely high percentage of low educated, 
 this seems corresponding to reality though.