The newer MacBook (2018 and newer) by default, display at a higher resolution than the classroom equipment can present. This results in a less than optimal projection. When you connect the laptop to the classroom equipment, please adjust your display resolution to eliminate this issue.
- Go to Menu > System Preferences…
- Click on Displays.
- Hold down the ⌥ Option key and click on the Scaled radio button. This should present several options.
- Click on 1080p.