To print from a Hertswood Academy Chromebook, you need your Print Code, and to print to the FollowMe printer.
Print Code
Click this link, log in with your normal school username/password (without the '@hertswoodacademy.org' part), and clicking 'Show' in the top-left corner under Card/ID.
This four digit number is your personal Print Code.
To Print...
Once you've completed the above steps, when you print from a Chromebook, use the 'Destination' drop-down.
If the FollowMe printer is listed, select it. If not, click 'See more...' and select it from the list that appears.
The very first time you print on a given Chromebook, you will see a window asking you to sign in. Do so with your school username/password (without the @hertswoodacademy.org part), or otherwise use the 'Sign in with Google' option and follow the instructions.
Once you've printed, you can go to any Printer or MFD (photocopier) in the school, enter your four digit Print Code, and choose Print Release.
This gives you a list of documents you've printed, which you can 'release' to print at that device.