EXHIBIT 21.01 SUBSIDIARIES OF THE REGISTRANT PLATO Learning, Inc. has four subsidiaries: 1. PLATO, Inc. 2. CyberEd, Inc. 3. Wasatch Interactive Learning Corporation 4. TeachMaster Technologies, Inc. PLATO, Inc. has two subsidiaries: 1. PLATO Learning (Canada), Inc. 2. PLATO Learning (UK), Ltd.