DMGT has appointed Greenhill, the investment bank, to sell Study Group, which is thought to be worth about £80m (€117m).
The company, part of the DMG Information division owned by DMGT, operates a network of teaching centres in Britain, America, Canada, Australia and New Zealand.
DMG Information, which consists of a portfolio of assets ranging from software companies to market-research providers, is not thought to be the subject of a broader review within DMGT.
However, the intention to sell Study Group follows a wave of corporate activity at DMGT. The group is increasingly investing in online businesses to reflect the shift in advertising revenues away from print media. Earlier this year, DMGT aborted the sale of Northcliffe Newspapers, its regional press division, after failing to attract satisfactory bids.
DMGT earlier this year launched an Irish edition of the Daily Mail, and is an investor in the Dublin free sheet, Metro. It was also mentioned as a possible bidder for property website, Myhome.ie.