[3] The lack of content about Wales since its closure has been criticised by the Welsh Education Minister, Jeremy Miles.

[4] All are produced by London-based company TES Global, which has been owned by US investment firm Providence Equity Partners LLC since 2018.

In addition to the magazine, TES runs a popular website featuring breaking education news and comment, teaching jobs, forums, and classroom resources that are uploaded by teachers.

[5] The idea for a regular section on education in The Times was first proposed in 1905 by J E G de Montmorency, a barrister and writer who later composed leader articles for The TES.

The first issue of the monthly educational supplement appeared on 6 September 1910, opening with a witty weather forecast for the UK's school systems.

King George V had recently begun his reign, and the paper noted that "some great resettlement of the English school system seems likely to take place".

Over its first decade, The TES established itself as a paper for teachers, though it was primarily aimed at those in private and grammar schools.

Mr. Dent had regular meetings with its president, Rab Butler, in the years building up to the Education Act 1944.

Its then editor, Stuart Maclure, noted in 1985 that "the irony of the last 10 years, in which the politicians and industrialists have clamoured for reform and accused the educationists of blocking it, was not lost on anyone who cares to look back".

Murdoch's News International restructured its newspapers to set up "Times Supplements Limited" and by 1999, this became "TSL Education Ltd", which also published THE and Nursery World.

[7] TES online is run by the London-based "TES Global", which claims to be "The largest network of teachers in the world", and has been owned by the US-based Providence Equity Partners global investment company since December 2018[8] Staff journalists at TES have included Simon Jenkins, who became editor of the Evening Standard and The Times; novelist, literary historian, and biographer Valerie Grosvenor Myer; and Timothy Mo and Frances Hill, who both became novelists.

External contributors have included Gordon Brown, who contributed comment articles to the Scottish edition of TES as a young lecturer in 1979.

[16] In February 2015, TES Global launched an open marketplace, which allowed teachers to buy and sell teaching resources.

[17] The TES portal is now home to "the world's largest online community of teachers", with more than 13 million registered users.

[18] In 2015, TES bought Hibernia College UK, at the time the largest provider of subject knowledge enhancement courses in England.