There can be a multitude of reasons why the volume seems low for either side. Here are the most common things to check for:
Firstly, ensure you and the other party have their computer's volume turned up. Sometimes this simple, yet common, oversight can solve this issue. For more advanced tuning of your volume, see our guide on adjusting your output volume.
Ensure your or the student/teacher's microphone is not positioned optimally. Try moving closer to the microphone.
Microphone Input Volume
You or the student/teachers's microphone input volume is not set correctly. Follow our guide to adjust the input volume.