School 2️⃣1️⃣ (the analogue of the School 4️⃣2️⃣) — is a free digital technology school. It offers: free and non-profit education without: traditional teachers, lessons, grades. Students learn teamwork and project activities.
A repository is a collection of completed School 2️⃣1️⃣ projects.
This repo is undergoing a production-grade overhaul (2026-05). Live status:
- Top-level dashboard:
STATUS.md— production-readiness matrix for all 37 subprojects across 8 Definition-of-Done items. - Per-subproject plans:
docs/plans/— checklist + history per subproject. - Design doc:
docs/specs/2026-05-11-production-grade-overhaul.md. - Working agreement:
CLAUDE.md— repo-wide rules and conventions. - AI-coding-agent contract:
AGENTS.md— public counterpart of CLAUDE.md, read by Copilot CLI / Cursor / Aider on session start. - Security policy:
SECURITY.md— how to report vulnerabilities + the three-layer leak-prevention stack (gitleaks pre-commit + secrets.yml CI + bandit + pip-audit). - Dev shortcuts:
Makefile—make install(pre-commit + dev tooling),make precommit-all(run every hook),make lint-{md,shell,python,cpp,sql,secrets}for the per-language gates.make helplists every target. - Toolchain pins:
docs/TOOLCHAIN.md— every language / linter / framework version, single source of truth. - Changelog:
CHANGELOG.md— Keep-a-Changelog record of the 2026-05-11 production-grade overhaul. - Generated docs site: erdogan-deniz.github.io/school-21 — Doxygen + Sphinx HTML, built and deployed by
pages.yml.
algorithms/,c/,career_track/,cpp/,data_science/,devops/,internship/,machine_learning/,python/,qa/,sql/,survival_camp/— language / track folders, each with one or more subprojects.content/— materials for the repo's design (badge images) and templates (content/templates/SUBPROJECT_README.md).docs/— design specs and per-subproject plans..github/workflows/— 8 CI workflows (lint, c, cpp, python, sql, devops, docs, pages).CLAUDE.md,STATUS.md,LICENSE,.clang-format,.ruff.toml,.gitignore,.markdownlint.json— repo-wide configuration and rules.README.md: the description file of the repository (you read it).
- Campus location: Moscow
- Wawe: 10.2022
- Nickname: charisel
- Program: Core program
- Level: 12
- XP: 20975
- E-mail: charisel@student.21-school.ru
| Skill Name: | Skill Points: |
|---|---|
| Math | 91 |
| QA | 400 |
| C | 1423 |
| OOP | 1284 |
| C++ | 1188 |
| SQL | 1183 |
| DevOps | 264 |
| Linux | 558 |
| Backend | 153 |
| Analysis | 122 |
| Graphics | 704 |
| Python | 1936 |
| Team Work | 940 |
| DB & Data | 576 |
| ML & AI | 639 |
| Algorithms | 2091 |
| Leadership | 1339 |
| Web Development | 136 |
| Shell & Bash | 411 |
| Parallel Computing | 23 |
| Company Experience | 3574 |
| Information Security | 36 |
| Functional Programming | 180 |
| Structured Programming | 1551 |
| Types & Data Structures | 873 |
| Network & System Administration | 506 |
- Nice: 4/4 😃
- Punctual: 4/4 ⏲
- Rigorous: 4/4 ⚖️
- Interested: 4/4 ❓
All peer reviews: 196
| Badge Name: | Badge Rank: | Badge Description: | Badge Image: |
|---|---|---|---|
| Real Programmer | 5/5 | Successfully perform 50 projects. |
 |
| Perfectionist | 5/5 | Successfully perform 21 projects with a bonus part. |
 |
| Mistakes Are Not For Me | 5/5 | Successfully perform 21 projects in a row without failur. |
 |
| King Of Study | - | Two badges for studies were obtained. |  |
| Welcome On Board | - | The Survival Camp was completed. |  |
| Pollinator | - | Successfully perform 15 group projects with 15 different partners in a team. |
 |
| 3 PRP | - | - |  |
| Finale Exam Passed | - | - |  |
| Badge Name: | Badge Rank: | Badge Description: | Badge Image: |
|---|---|---|---|
| Such A Listener | 5/5 | Visit 50 lectures`. |
 |
| Lead The World | 3/5 | Be a team lead in 5 projects. |
 |
| Badge Name: | Badge Rank: | Badge Description: | Badge Image: |
|---|---|---|---|
| Happy Halloween! | - | BOOOO! |  |
| Computer Security Day 2023 | - | Happy Cybersecurity Day! |  |
| Harry New Year, Moscow! | - | Happy New Year, our dear, beloved peers! |  |
| Space Exploration Day | - | As Yuri Gagarin once said: Let's go! |
 |
| Badge Name: | Badge Rank: | Badge Description: | Badge Image: |
|---|---|---|---|
| Billionaire | 3/5 | Accumulate 500 coins. |  |
| Happy Halloween! | - | Happy Halloween! |  |
| Happy Birthday, Moscow сampus! | - | The Moscow campus of School 21 has turned 5 years old! |
 |
Happy birthday, Wave 16! |
- | With love from ADM. |  |
| Badge Name: | Badge Rank: | Badge Description: | Badge Image: |
|---|---|---|---|
| Will you be my peer? | - | Love is School 21, which has become a second home! |  |
- Telegram: @deniz_erdogan
- E-mail: erdogan33@mail.ru
- Specialization: Python backend developer & Data Scientist