If you've received a Knowledgehook Premium class redemption code and want to upgrade an existing class just follow these steps:
If your board has unlimited licenses simply use your boards approved domain and your class will be upgraded automatically.
From the control bar at the top of the page, Click on the Knowledgehook logo to navigate to the class page
You will go to your Class Management screen
Then Click "upgrade" and input your premium code .
Nothing changes for how students login, they still go the joinkh.com and enter their class code.