To access online programs, such as Introduction to the CLASS Tool or Looking at CLASSrooms, and the online Reliability Test, you’ll need:

1. High-speed Internet access—such as cable, DSL, or a company or school high-speed network. Do NOT try to access our programs over 3G wireless or a dial-up connection.
2. Adobe Flash Player.
3. Adobe Reader—to print your completion certificate.

Teachstone programs work with the most recent versions of HTML 5 compliant, popular browsers such as:

• Chrome versions 20+
• Firefox versions 15+
• Internet Explorer versions 9+
• Safari versions 5+

We recommend using either Google Chrome or Firefox for your browser when taking the online Reliability Test.

Most of our courses are mobile friendly and can be viewed on mobile browsers.

For online programs, you will also need to configure your browser to:

1. Enable javascript.
2. Enable cookies.
3. Turn off pop-up blockers.
4. Install the latest Flash player from Adobe.com.

Our programs will run on almost any size screen at any resolution, but for best results use a computer with screen size set to 1024 x 768 or larger.

The Teachstone website and CLASS Video Library can be viewed on tablet and mobile devices such as an iPad or iPhone. 

Testing and online programs require Adobe Flash Player, which is not compatible with the iPad, but is compatible on a desktop or laptop computer.