2U, Inc. (NasdaqGS:TWOU) has hired advisers for a strategic review after an activist investor pressured the educational software company to explore a sale, according to people familiar with the matter. The company is working with financial advisers to explore ways to improve its performance, including a sale, said the people, who asked not to be identified because the matter is private. A final decision hasn’t been made and 2U could opt to remain independent, they said. A representative for 2U declined to comment. If 2U finds a buyer, the deal would follow the take-private of another company in the sector.