Exhibit 21.0 Subsidiaries of Sylvan Learning Systems. Inc. COUNTRY/ COMPANY STATE OF INCORP. - ------- ---------------- SYLVAN LEARNING SYSTEMS, INC. MARYLAND Tuition Finance, Inc. Maryland Office Overload, Inc. Delaware ITS General, Inc. Delaware WSI, Miami, Inc. Florida NAI / Block, Inc. Florida Pacific Language Associates, Inc. Oregon Educational Products, Inc. Maryland Sylvan Properties, Inc. Delaware Sylvan Learning Corporation Maryland The Canter Group of Companies, Inc. California Its Subsidiary: -------------- Canter & Associates, Inc. Delaware Sylvan Learning Systems International. Ltd. Delaware Its Subsidiary: -------------- Sylvan Learning Systems I, B.V. Netherlands Its Subsidiaries: ---------------- Sylvan Learning Systems B.V. Netherlands Its Subsidiaries: ---------------- Sylvan Learning Systems Pty, Ltd Australia Sylvan Learning Systems (Pty), Ltd South Africa Sylvan Testing Services Pvte, Ltd India Sylvan Prometric KK Japan Sylvan LLC Egypt Computer Certification Services, Ltd U.K. Sylvan Learning Systems II, B.V. Netherlands Its Subsidiaries: ---------------- Sylvan Learning Systems Ltd New Zealand Sylvan Pte, Ltd Singapore Sylvan Learning Systems II GmbH Austria Sylvan Learning Systems Ltd. Israel WSI Sylvan Learning Systems S.L. Spain Dorana 41 GmbH Germany Schulerhilfe Promotion GmbH Germany Sylvan Learning Systems GmbH Germany ZGS Zentrale Gatsenkirchener Schulerhilfe J. Gratze & M. Mohr GmbH Germany WSI Kft Hungary Sylvan III B.V. Netherlands Sylvan Prometric Ltd U.K. Aspect International Language Schools B.V. Netherlands Aspect Education, Inc. California AW Education (UK), Ltd U.K. The Lemaire English College Pty Ltd Australia Aspect International Language Schools, Ltd Canada Aspect International Language Schools, Ltd Ireland Aspect Language Schools, Ltd Switzerland