Global private equity fund manager Advent International has agreed to sell Poland-based educational services provider Wydawnictwa Szkolne i Pedagogiczne (WSiP) to Hungary-based diversified investment holding company Central Group. WSiP provides various educational solutions and services to students and teachers, including self-learning and digital products, textbook publishing and tutoring. Advent originally invested in WSiP in February 2010. The transaction is subject to Polish competition authority clearance.