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How it works

Offline CBT software that runs on your own school network

Offline CBT software runs the whole exam inside your school. There is no dependence on internet during the exam, so a weak signal or an empty data bundle cannot stop your students.

What "offline" means

In an offline CBT set-up, one computer in your school acts as the exam server. It holds the program, the questions and the students' answers. Every other computer connects to it over your local network, by cable or Wi-Fi, using only a web browser. The exam never travels over the internet.

With Chuvor CBT, internet is needed only on the day you buy: to pay online and download your licence file. After that, exams run entirely on your own network.

Diagram of offline CBT: one server computer running CBT System connected through the school network to student computers that use a web browser, with no internet needed
The exam runs on one server computer inside your school. Student computers only need a web browser.

Why schools choose offline CBT

  • Exams do not stop when the internet does. Nothing in the exam depends on a link outside your building.
  • No data costs for students or for the school during exams.
  • Your data stays with you. Questions, answers and results are kept on your own server computer.
  • Fast. Questions load over your own network, not from a distant server.
  • Easy to organise. Use any computer room, laptops, tablets or phones that can join your network.

Built to keep every answer

Answers are saved as students work, and the exam screen shows an "All answers saved" indicator. Chuvor CBT supports up to 500 computers writing at the same time, and it has built-in backup and restore, so you can keep a copy of your data and recover it if you ever need to.

What you need

Step-by-step instructions are in the installation guide.

  • A server computer running Windows 10 or 11 (64-bit). A dedicated computer with an SSD works best.
  • Microsoft SQL Server Express (free). Chuvor CBT keeps all its data in it.
  • A local network that connects the server and the student computers.
  • A web browser on each student computer.
  • Server memory of 8 GB for up to 70 computers, 16 GB for 75 to 200, and 32 GB above 200.

Security without internet

Chuvor CBT detects and records tab switching, copying, pasting and back-button use, and can submit an exam automatically after repeated violations. A licence is made for one server computer and cannot be moved to another, and changing the computer's clock does not extend it.

Frequently asked questions

What is offline CBT software?

Offline CBT software delivers computer-based exams over your own school network without needing the internet. A server computer in your school holds the exam and students connect to it with a web browser.

Does Chuvor CBT need internet at all?

Only on the day you buy, to pay and download your licence file. Exams themselves run without internet.

Can students use phones or tablets?

Yes. Any device with a web browser that can join your school network can be used, with every button available.

What happens to the answers if something goes wrong?

Answers are saved as students work, and the exam screen shows an "All answers saved" indicator. The software also has built-in backup and restore.

Can I move the licence to another computer?

A licence is made for one server computer. If you change your server computer, write to us with your new computer code and we will help.

Keep reading

CBT software for universities and large exam centresFor universities CBT software for schools: what to look for before you buyBuying guide How to set up a computer-based test (CBT) in your schoolStep-by-step guide

Run your next exam on your own computers

Install Chuvor CBT, then buy your licence online in a few minutes.

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