North-east Glasgow has the highest proportion of adults without any qualifications in Britain, a study has found.
There is also a wide gulf in attainment between Glasgow and Edinburgh, the University and College Union revealed.
Five out of Glasgow's seven Westminster constituencies house an above average number of working-age people with no qualifications, in contrast to Edinburgh where only one of its seven constituencies falls below par.
Over a quarter (27.5%) of residents in Glasgow North East have no qualifications. This is closely followed by neighbouring Glasgow East at 26.2%, making it the third lowest achieving constituency in Britain.
Fourteen out of the top 15 constituencies for low attainment in Scotland are in west and central Scotland, with only Edinburgh East falling in the top 15 with 14.9% of adults without qualifications.
West Aberdeenshire and Kincardine has the highest level of attainment in Scotland, with just 4.3% of residents holding no qualifications.
UCU Scotland official Mary Senior said: "This research shows that access to the benefits that education brings is heavily rationed in Scotland today with some constituencies in the west having almost seven times more people without qualifications than others in the east of Scotland.
"We live in a fast-changing knowledge economy where education is vital to improving employment chances, life chances and for society. It is this knowledge economy that will drive economic growth and enhance social mobility. Politicians must continue to increase access to educational opportunities."
UCU ranked the 632 Westminster parliamentary constituencies in England, Scotland and Wales according to the percentage of working-age people (aged 16-64) who have no qualifications.
Scotland's national rate for people without qualifications (11.6%) is higher than the British average of 10.7% and the equivalent rate for England of 10.4%. The analysis coincides with the launch of a new UK campaign to promote the knowledge economy and its contribution to the wider economy and society.