Dear all, I would just like to note that there has been a revision of the International Standard Classification of Education, the ISCED 2011. Because there seem to be some significant changes in the codings, I have explicitly referenced the 1997 standard in the EDU_LVL variable that was used in the proposal. The correspondence between codings of the top-level codes between the 1997 and 2011 standards is shown in table 19 on page 66 of http://www.uis.unesco.org...36C-19_ISCED_EN.pdf. Kind regards, Mark