Exhibit 21.1

SUBSIDIARIES OF

VOYAGER LEARNING COMPANY (Delaware)

December 2006

Voyager Learning
Company subsidiaries are 100% owned by

Voyager Learning Company unless otherwise indicated



|                                                                                                                                                     |  |               
|---------------------------------------------------------------------------------------------------------------------------------------------------- |  | --------------
|Voyager Learning Company  Subsidiary                                                                                                                |  | Incorporation 
|                                                                                                                                                     | 
|ProQuest Content Operations, Inc. *                                                                                                                  |  | Delaware      
|                                                                                                                                                     | 
|ProQuest Information Access Limited *                                                                                                                |  | Canada        
|                                                                                                                                                     | 
|ProQuest Information and Learning Company *                                                                                                          |  | Delaware      
|                                                                                                                                                     | 
|- ProQuest Brazil Limitada (Ltda) * (99% owned by ProQuest Information and Learning Company, 1% owned by Voyager Learning
Company)                   |  | Brazil        
|                                                                                                                                                     | 
|- Softline Information, Inc. * (100% owned by ProQuest Information and Learning Company)                                                             |  | New Hampshire 
|                                                                                                                                                     | 
|- Norman Ross Publishing, Inc. * (100% owned by ProQuest Information and Learning Company)                                                           |  | New York      
|                                                                                                                                                     | 
|- Bigchalk, Inc. * (100% owned by ProQuest Information and Learning Company)                                                                         |  | Delaware      
|                                                                                                                                                     | 
|- Homeworkcentral.com, Inc. * (100% owned by Bigchalk, Inc.)                                                                                         |  | Delaware      
|                                                                                                                                                     | 
|- Mediaseek Technologies, Inc. * (100% owned by Bigchalk, Inc.)                                                                                      |  | Canada        
|                                                                                                                                                     | 
|- SIRS Publishing, Inc. * (100% owned by ProQuest Information and Learning Company)                                                                  |  | Florida       
|                                                                                                                                                     | 
|- Copley Publishing Group, Inc. * (100% owned by ProQuest Information and Learning Company)                                                          |  | Massachusetts 
|                                                                                                                                                     | 
|- LearningPage.com, Inc. * (100% owned by ProQuest Information and Learning Company)                                                                 |  | Arizona       
|                                                                                                                                                     | 
|- Serials Solution, Inc. * (100% owned by ProQuest Information and Learning Company)                                                                 |  | Washington    
|                                                                                                                                                     | 
|ProQuest U.K. Holdings Limited * (Formerly known as Bell & Howell A-V Limited)                                                                       |  | United Kingdom
|                                                                                                                                                     | 
|- ProQuest IPI Limited (dormant) * (Formerly known as Bell & Howell Information and Learning Limited) (100% owned by ProQuest U.K.
Holdings Limited) |  | United Kingdom
|                                                                                                                                                     | 
|- ProQuest Information and Learning Limited * (100% owned by ProQuest U.K. Holdings, Ltd.)                                                           |  | United Kingdom
|                                                                                                                                                     | 
|- Chadwyck-Healey Espana, SL * (100% owned by ProQuest Information and Learning Ltd.)                                                                |  | Spain         
|                                                                                                                                                     | 
|Voyager Holding Corp. (100% owned by ProQuest Information and Learning Company in 2005. Currently 100% owned by Voyager Learning
Company)            |  | Texas         
|                                                                                                                                                     | 
|- ProQuest Learning I, LLC (100% owned by Voyager Holding Corp.)                                                                                     |  | Delaware      
|                                                                                                                                                     | 
|- ProQuest Learning II, LLC (100% owned by Voyager Holding Corp.)                                                                                    |  | Delaware      
|                                                                                                                                                     | 
|- Voyager Expanded Learning, LP (General Partner - ProQuest Learning I, LLC; Limited Partner - ProQuest Learning II, LLC)                            |  | Texas         
|                                                                                                                                                     | 
|*  As of the date of this filing, no longer subsidiaries of Voyager Learning Company.                                                                |  |               
|                                                                                                                                                     | 
|As of the date of this filing the corporate structure is as follows:                                                                                 |  |               
|                                                                                                                                                     | 
|Voyager Learning Company                                                                                                                             |  | Delaware      
|                                                                                                                                                     | 
|- Voyager Expanded Learning, Inc. (100% owned by Voyager Learning Company)                                                                           |  | Delaware