Download the latest
Chrome file.
Move the file from your Downloads folder to somewhere safe on your
computer.
Right-Click the file and press extract all (or extract using other
programs if you use them).
Go to chrome://extensions.
On the Chrome Extensions page, press the switch next to 'Developer
mode', then press 'Load unpacked'.
Select the folder you extracted it to (called 'Schoolbox Dark Mode
v23.1.0'), it should look blank in this dialog.
You should now see the Schoolbox Dark Mode extension in the
list.
Press the switch next to 'Developer mode' again, and use Schoolbox
like normal.
Schoolbox Dark Mode is now installed!
If You Already Had Schoolbox Dark Mode (Update
Instructions):
Go to chrome://extensions.
On the Chrome Extensions page, under the 'Schoolbox Dark Mode'
section, press 'Remove'.
Now, follow the installation instructions above (or use the
video).