A coding classroom for schools

Building the Minds that Build Tomorrow.

Live lessons on every screen. Exams that hold. Marks a teacher can stand behind. Built for schools that take computing seriously.

Est. MMXXVI · Made for schools
Built for the DPDP Act 2023

01 · The lesson begins

One editor.
Every language.
No setup.

Students write in a real editor, in the browser. Python, Java, C++ and more, ready the moment the lid opens. Nothing to install. Nothing to lose.

two_sum.py Python 3.12
1def two_sum(nums, target):
2    seen = {}
3    for i, n in enumerate(nums):
4        if target - n in seen:
5            return [seen[target - n], i]
6        seen[n] = i
7    return []
Live lesson Aarav · Year 10 Run

02 · The push

One question.
Thirty screens.
Instantly.

The teacher pushes a question and it lands on every desk at once. Every student, every keystroke, in view from the front of the room.

Question 3 of 6 12 marks
Two Sum

Given an array of integers and a target, return the indices of the two numbers that add to the target.

ArraysHashingO(n)
0 of 30 received

03 · The run

Real code,
run for real.

Every submission runs in its own sealed sandbox and is judged against the teacher's tests in under a second. No network. No escape. No excuses.

Sandbox · run 4f2a Docker
$ python two_sum.py
[sandbox] container up · 61 ms
[sandbox] cpu 0.5 · mem 128 MB · net off
✓ test 1  [2,7,11,15] → [0,1]      3 ms
✓ test 2  [3,2,4] → [1,2]           2 ms
✓ test 3  [3,3] → [0,1]             2 ms
✓ test 4  hidden                    4 ms
✓ test 5  hidden                    3 ms
5 of 5 passed · 42 ms · 12 / 12 marks

04 · The race

Competitive
Mode.

Two students, one problem, a live leaderboard the whole class can see. The teacher has the final call.

Duel · Two Sum 2:14 remaining
AAarav0%
🏁
MMira0%
🏁
Mira · first to pass Teacher may override

05 · The sealed room

Exams
that hold.

Bound to the school's own devices and network. Tab switches noticed, suspicion flagged, every event on the record. Students are protected as much as the paper is.

Mid-term · Computer Science Sealed
  • DeviceBound · Lab-14✓
  • NetworkSchool only✓
  • WindowSingle, fullscreen✓
  • Tab switches0✓
  • SuspicionNone flagged✓
  • RecordEvery event, timestamped✓
28 students · 0 incidents

06 · The ledger

Marks a teacher can
stand behind.

Rubrics, auto-grading and review side by side. Every mark traceable to the line of code that earned it.

Marks · Two Sum Aarav · Year 10
Correctness6 / 6
Complexity3 / 3
Readability2 / 3
Total11 / 12
Readability: name n as value. Auto-graded, teacher reviewed.

About Quala Labs

Built for schools that teach computing seriously.

One platform for the lesson, the exam and the mark, so a teacher's attention stays on the students and not on the tooling. Quala Labs runs inside the school's own network, on the school's own devices, and keeps every record where the school can see it.

  • Livelessons on every screen
  • Sealedexams, device bound
  • Traceablemarks, line by line
  • Privatebuilt for the DPDP Act 2023

07 · Contact

See it in your
own classroom.

A forty-minute walkthrough with a live class, on your devices, in your network. No slides.

support@qualalabs.com

Already decided? Register your school and start fourteen days free.

Book a walkthrough We reply within a school day