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As a teacher, you create and manage CBT exams through the Teacher App. This guide covers the entire process from creation to publishing.
Before you begin: You need to be a teacher with an existing course and enrolled students.

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Creating a new exam

1

Open your course

Navigate to the course in the Teacher App and go to the CBT section. The CBT exams list for your course appears.
2

Click 'Create CBT Exam'

Tap the button to start building your exam. The exam creation form opens.
Create CBT exam form with fields for title, description, duration, and exam settings

Screenshot: Create CBT exam form

3

Fill in exam details

4

Save the exam

Tap Save. The exam is saved as a draft so you can continue adding questions and configuring settings. The exam appears in your Drafts tab.

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Adding questions

CBT questions are all multiple-choice format.
1

Open the exam

Find your exam in the CBT list (under Drafts) and click it. The exam detail view opens.
2

Go to Questions

Navigate to the Questions tab. The question list appears (empty for a new exam).
3

Add a question

For each question:
  1. Write the question text — Use the editor to format your question. You can include bold, italics, lists, and more.
  2. Add answer options — Enter options A, B, C, D (and more if needed). Each option has a text field.
  3. Select the correct answer — Mark which option is correct.
  4. Set marks — How many points this question is worth.
Question editor with question text field, options A through D, correct answer selector, and marks input

Screenshot: Question editor showing question text, options A-D, correct answer selection, and marks

4

Use the math editor (optional)

For math and science exams, use the math equation editor to add properly formatted equations to questions and answer options.
Math equation editor toolbar with formatted equation inserted into a CBT question field

Screenshot: Math editor being used to add an equation to a CBT question

5

Preview questions

Use the Preview feature to see how questions will look to students before publishing. The preview opens showing the student’s view of the question.
Question preview showing how the question and answer options appear to students during the exam

Screenshot: Question preview showing how the question appears to students

6

Repeat for all questions

Add all your questions. The exam’s total marks are calculated automatically as the sum of all question marks.

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Importing questions from an Excel file

If you have many questions to add, you can import them in bulk from an Excel spreadsheet instead of entering them one by one.
1

Download the template

In the Questions tab of your exam, tap the Import or Upload button. You’ll see an option to download the template. Download it to use as a starting point — the template file has the correct column headers pre-filled.📥 Download question import template
2

Fill in the template

Open the template in Excel or Google Sheets. Each row is one question. The first two columns are required, and you can add as many option columns as needed:The Correct Answer column should contain the exact text of the right answer. All other columns beyond Question and Correct Answer are treated as answer options. You need at least one option column in addition to the correct answer.Example spreadsheet:
The correct answer text must appear exactly in one of the option columns. Lena uses this to identify which option is correct. The answer options are automatically shuffled for each student during the exam.
3

Upload the file

Select your completed .xlsx file and upload it. Lena validates the file and shows a summary of the questions that will be imported.
4

Review and confirm

Review the imported questions to make sure they look correct. Once confirmed, the questions are added to your exam. You can still edit individual questions after import.
  • The file must be in .xlsx format (Excel workbook)
  • The Question and Correct Answer columns are required — all other columns are treated as answer options
  • Each question must have at least 2 answer options total (including the correct answer)
  • Data must be on the first (active) sheet of the workbook
Excel import is great for quickly building large question banks. Prepare all your questions in a spreadsheet and upload them in one go. You can always edit or delete individual questions after importing.

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Assigning students

Specify which students can take the exam:
1

Go to the Students tab

Open your exam and navigate to the Students section. The student assignment view appears.
2

Add students

Select students from your course’s enrolled students list, or assign by class/group. Selected students appear in the assigned list.
Make sure to assign all the students who should take the exam before publishing. Students who aren’t assigned won’t see the exam on their dashboard.

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Exam settings explained

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Duration and time window

  • Duration — How long each student has once they start (e.g., 60 minutes)
  • Start time to End time — The window during which students can begin the exam
Example: Exam duration is 60 minutes, window is 9:00 AM to 12:00 PM. A student who starts at 11:30 AM still gets the full 60 minutes (ending at 12:30 PM).

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Tab-switch limit

Set the maximum number of tab switches before the exam is auto-submitted:
  • 0 — No tab switches allowed (strictest)
  • 3 — Three warnings before auto-submission (moderate)
  • Unlimited — No restriction (most lenient)

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Show results

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Publishing the exam

When your exam is ready:
  1. Review all questions using the Preview feature
  2. Confirm students are assigned
  3. Tap Publish. The exam is now visible to assigned students during the exam window.
After publishing, the exam becomes available to students during the specified time window. Make sure all questions are finalized before publishing — editing questions after students have started may cause issues.

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Managing your exams

Your CBT exams are organized into tabs:

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Proctor invitations

If your school admin assigns you as a proctor (invigilator) for another teacher’s exam, you’ll receive an email invitation. You can accept or decline:
  1. Open the Teacher App — you’ll see the pending proctor invitation
  2. Review the exam details, assigned class, and any notes from the admin
  3. Tap Accept to confirm you’ll proctor the exam, or Decline if you’re unavailable
Proctoring is in-person — your role is to oversee students physically during the exam session. The CBT system does not include live screen monitoring.

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Tips for creating effective exams

  • Write clear questions — Avoid ambiguity in question text and answer options
  • Use the preview — Always preview questions to check formatting, especially for math equations
  • Test the duration — A good rule: give students 1-2 minutes per question
  • Set a reasonable tab-switch limit — 3-5 switches is common (some are accidental)
  • Provide instructions — Use the description field to tell students what to expect