Tes
Tes is an education technology company selling teacher recruitment, school management software, teaching resources, training and media to schools, trusts and teachers.
Tes (formerly TSL Education and the Times Educational Supplement, founded 1910) runs a marketplace for teacher jobs and classroom resources. It also sells school staff-management and HR software, the Tes Institute teacher training and CPD courses, and Tes Magazine. Customers are schools, multi-academy trusts and individual teachers in the UK and internationally. Revenue comes from recruitment advertising, software subscriptions, training fees and content. It has AI features, such as AI-assisted job descriptions and candidate matching in Tes Staff Management, but it is an edtech company, not a pure AI company. It is private equity-backed. Tracxn lists Onex as acquirer in December 2021 and estimates revenue of £100M–£500M for FY2024. Headcount was about 2,500 in mid-2026.
