Classroom Guide

A practical walkthrough of running a lesson with InHand — from starting a share to ending the session.

Before the lesson

1. Open the teacher app and confirm every student client shows Connected.
2. If a machine is missing, check the student installed the client (see Installing the Student Client) and that it is on the same network.
3. Have the material ready on your screen — a document, slides or a live demo.

During the lesson

Start sharing

1. Click Share screen in the teacher console.
2. Pick the window or display to share.
3. Every student device displays the shared content on their class wall.

Sharing is teacher-controlled at all times — you choose what is shown. The class can only see what you explicitly share.

Use Focus mode

To bring every student device to the same screen:

1. Click Focus mode in the teacher console.
2. All student walls lock to the shared content — no distractions, no tabbing away.
3. Click Exit focus to release the class.

Cut internet access (optional)

If your school installed the LAN-only firewall helper, the teacher can cut internet access for the class while keeping the LAN working — useful for tests or exams. Click the firewall toggle in the console. To force-close a locked machine: sudo sh /Library/Application Support/InHand/inhand-fwctl unlock.

After the lesson

1. Click End session in the teacher console.
2. Student devices return to their normal state automatically.
3. The audit log records the session for your records.

Troubleshooting

Problem	What to try
A student shows Offline	Verify the student client is running (LaunchAgent com.inhand.student), and that the machine is on the school LAN.
Screen sharing is greyed out	Grant Screen Recording permission to the teacher app in System Settings → Privacy & Security.
Students see a blank wall	End the session and start a new share; check you selected the correct window.
School not discovered	Re-run registration with a fresh token; one public IP is one registration.