Look for a program called "Mobility Print" on your chromebook and run it. Then follow the directions. You should only need to do this once.
If you wish to print from your chromebook in school, follow the instructions below.
2. There your print menu will come up. By default it will choose the last printer you used. To use another printer click "Change".
3. If you don't immediately see the printer you want to print to, click "Show All".