When sending texts to a Class or a group of Account Holders, you may want to ensure your Instructors get copied on the same message. At the writing of this article, there is no way to copy instructors on SMS messages.
The best workaround is the following:
Copy your message to your customers by selecting the text:
Go to My Company > Users > Instructors.
Select the Instructors on the left, and click the SMS icon to open the text message window.
Paste the message, then click send.