Secure CBT Exam Software Built for Nigerian Classrooms — and Nigerian Power Supply
Most computer-based test platforms assume stable internet and uninterrupted power. Nexus-OS assumes the opposite: a locked-down desktop exam client that keeps running when NEPA takes light, restores every answered question after a blackout, and grades the whole school automatically when it's done.
Why Nigerian Schools Choose the Nexus-OS Exam Engine
Offline-Failsafe Auto-Save
Student answers are written to the local machine every few seconds. After a power cut or network drop, the exact exam state is restored on relaunch — zero lost answers, zero disrupted students.
Cheating-Resistant Lockdown
The exam client locks the workstation: no browsing, no copying out, no alt-tabbing out of the test. Question and option order is randomised per candidate.
WAEC · NECO · BECE · JAMB/UTME Modes
Build mock and practice exams in the exact format of the external exams students are preparing for — timed sections, objective and theory papers, and realistic scoring.
Reusable Question Bank
Store questions by subject, class and topic. Reuse, version and reshuffle them into new exams in seconds instead of retyping every term.
Instant Auto-Grading & Analysis
Objective papers are scored the moment a student submits. Teachers see per-question performance to find the topics the class actually failed.
Scores Flow Straight Into Report Cards
Native integration with Nexus-OS result processing — exam scores need no re-entry and feed the automatic report card compiler directly.
Running a Full CBT Exam Day
- Teachers build the paper Set duration, sections, questions from the bank or new ones, and pass marks — per class or per subject.
- Admin schedules and unlocks the lab Exam sessions are activated on the school's computers over LAN or cloud. Students log in with their own credentials.
- Students write under lockdown The desktop client keeps them on the exam screen, autosaves continuously, and survives interruptions silently.
- System grades and syncs Objective answers are auto-scored on submission; everything syncs to the central system when the session ends.
- Results published to portals Scores appear in the staff dashboard for review and in parent portals once approved — with full audit logs.
Frequently Asked Questions
Can the CBT software work during internet or power failures?
Yes. The secure desktop exam client saves student answers locally every few seconds. If power or internet is interrupted during an exam, the student's exact progress is restored automatically the moment the system reconnects — ensuring zero data loss and zero student distress during examinations.
Does Nexus-OS CBT support WAEC, BECE and JAMB/UTME practice?
Yes. You can build question banks in WAEC, NECO, BECE and JAMB/UTME formats with timed sections, objective and theory question types, and exam-style scoring — so students practise under real conditions before the original exams.
How does Nexus-OS prevent exam cheating during CBT?
The desktop client runs in a locked exam mode: students cannot exit the app, copy questions out, or browse the internet during the test. Each student receives a randomly shuffled question and option order, and all sessions are logged for audit.
Are CBT scores added to students' report cards automatically?
Yes. Because the CBT engine is part of the same Nexus-OS system as result processing, exam scores flow straight into the automatic result compiler — no re-entry, no transcription errors.
Explore Other Nexus-OS Modules
See a Live CBT Exam Run on Real Hardware
In the demo we simulate a full exam session — including a mid-exam disconnect — and show you exactly what happens to the students' answers.