Frequently asked questions
What hosts ask most often when they start using Classroom Quiz.
Is Classroom Quiz free?
Yes. Playing games, using classroom tools and running live rooms are all free.
Do I need an account?
No. An account only matters when you want your sets stored on the server to open on other devices, shared with colleagues, or sent to the community.
How do players join?
The host opens a room and shows the room code (or QR code) on screen. Players open "Join a class", enter the code and a nickname, and play right away on their phones — no account needed.
Can I write my own questions?
Yes. Use the "Question bank" or the "New lesson" button inside each game. You can paste from Excel/Word and add images to questions and answers.
Why did my question sets disappear?
Without an account, sets are stored only in that browser on that device. A different device or browser, or cleared browsing data, means they are gone. Sign in and save to keep sets on the server.
What devices do I need?
A shared screen (projector, TV or interactive board) for the host. Players use a phone or tablet with a browser; some games run on one shared screen for everyone.
Is the site available in English?
Yes. Click the globe icon in the top bar to switch between Tiếng Việt and English.
I found a bug or have feedback
Send it through the Contact page — describing the problem, your browser and the page link helps us fix it faster.
Send us a message — we usually reply within a few working days.