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An online course platform for the INF.03 and INF.04 vocational IT exams in Poland: video lessons with code, walkthroughs of official past papers and a timed mock exam. Students know their score before they walk into the exam room.

RoleOwner and developer
Year2026
Designsuzidesign
Built forIT and programming technician students
Websiteskumasz.pl (opens in a new tab)
Skumasz homepage: an online course for the INF.03 vocational exam with an interactive SQL lesson, an exam readiness score and a timed past paper

The challenge

Students have plenty of free questions for the written part of the exam, but nobody teaches them the practical part step by step and against the clock.

The solution

Short video lessons with code, SQL, HTML, CSS and JavaScript exercises in the browser with instant checking, past papers broken down stage by stage, and a timed exam mode.

Exam readiness

A readiness score, tracked separately for the written and practical parts, shows exactly how far a student is from passing.

Key features

  1. 01Timed online mock test
  2. 02Short video lessons with code
  3. 03In-browser exercises with automatic checking
  4. 04Past papers explained stage by stage
  5. 05Exam mode with a timer and file checklist
  6. 06Self-assessment against the official criteria
  7. 07Exam readiness score

Tech stack

App
Next.jsTypeScriptTailwind CSS
Data
PostgreSQLDrizzle ORMRedis
Auth and email
Better AuthResend
In-browser learning
sql.jspdf-lib
Infrastructure
DockerS3 APICI/CDGitHub Workflows
An interactive SQL lesson in the Skumasz INF.03 course: an animated GROUP BY query with COUNT(*) and its result table next to a step-by-step explanation
The INF.03 online mock test on Skumasz: a written-exam question with a selected answer, a countdown timer and a question map
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