| Name | Exchange | Symbol | Last trade | Change | Mkt cap | |
| Tom Snyder Productions, Inc. | Private | |||||
| Cengage Learning, Inc. | Private | |||||
| Pearson Digital Learning | Private | |||||
| Design Science, Inc. | Private | |||||
| Renaissance Learning, Inc. | Private | |||||
| OutStart, Inc. | Private | |||||
| StepWare, Inc. | Private | |||||
| OneTouch Systems, Inc. | Private | |||||
| Transparent Language, Inc. | Private | |||||
| Scantron Corporation | Private | |||||
| Enspire Learning, Inc. | Private |