After logging into Data Driven Classroom, you can access all your account information by clicking on your account name in the upper right corner of the screen ("CADemo" in the screenshot):
After clicking on that link, you will be taken to a page that shows all your account information. Click on the "Manage Password" link:
Once on the Manage Password page, you can change your password by entering your old password and typing your new one twice. NOTE you password must be 6 characters. Click on "Change Password" to save your changes.
After clicking that link you will be take to your View Profile page. Click on "Edit Profile" under the picture box:
After clicking on that link, you will be taken to a page that shows all your account information. Click on the "Manage Password" link:
Once on the Manage Password page, you can change your password by entering your old password and typing your new one twice. NOTE you password must be 6 characters. Click on "Change Password" to save your changes.