De Engelse versie van de DUO-website handhaaft de afkorting.

Welcome to the site of DUO. This site is intended for foreigners who plan to take up a study or start a career in the Netherlands. In the menu above, click on the subject you wish to read more about.
http://www.ib-groep.nl/International_visitors/default.asp

See e.g. how these two official Dutch websites handle the problem:

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'About DUO

The Dienst Uitvoering Onderwijs is responsible for the execution of several acts and regulations, such as student grants and information management.'

(...)

The Dienst Uitvoering Onderwijs (DUO) is a Dutch governmental organization, responsible for – amongst other things – the payment of study grants to students. These students are only entitled to a grant for the period they are actually registered at an instuitution of education. In certain cases, DUO also provides study grants for students who take a course at an institution outside The Netherlands. (http://www.ib-groep.nl/international_visitors/customer_servi... )
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'DUO implements education laws and regulations. Several important duties are: funding educational institutions, providing study funding, collecting teaching fees and study debts, organising school examinations.
The ‘Dienst Uitvoering Onderwijs’ (DUO) falls under the Ministry of Education, Cultural Affairs and Science (OCW).' (http://www.govcert.nl/english/community/constituents/Overvie... )
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