Private education group Cognita has reportedly appointed bankers to explore a sale which could attract a £2bn valuation.
Cognita was founded in 2004 in the UK with a single school, but has since expanded internationally, adding schools in countries such as Spain, Singapore, Hong Kong, Thailand, Vietnam, Brazil and Chile.
It currently runs 68 schools worldwide, accounting for more than 30,000 students.
According to the report, interested bidders could include education companies GEMS Education and Nord Anglia Education.
Cognita declined to comment.