Textfree by Pinger
Here is a tool that you can use to send text messages to parents without using your personal cell phone number. You can use Pinger Text Free to send text messages from your web browser or via the app on your phone. Pro-Tip when making your list of numbers for a group message be sure to include a comma after each number before copy pasting the numbers into the to line. Also I didn’t find a BCC way to send to a group.