This study reviewed existing research to quantify the extent to which the UK and Wales are unusual in having a long 'tail' of people with relatively few, or no, qualifications.
Adolygodd yr astudiaeth hon ymchwil bresennol i fesur i ba raddau y mae'r DU a Chymru yn anarferol gan fod ganddynt 'gynffon' hir o bobl sydd ag ychydig iawn o gymwysterau, os o gwbl.