# twitter/scala_school

Lessons in the Fundamentals of Scala

Repository: https://github.com/twitter/scala_school
Canonical: https://ross.abutalabs.com/products/scala_school
Homepage: https://twitter.github.io/scala_school
Language: HTML
License: Apache-2.0
License Family: permissive
Last push: 2023-04-10T11:42:57+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5838, "days_push": 1241, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3687, forks 1094 (observed 2026-08-28T04:08:14.686790+00:00)

## What it is
Scala School is a set of written lessons teaching the fundamentals of the Scala programming language, originally created as internal lectures at Twitter. The content is published as a static website generated with Jekyll.

## Use cases
- learn scala from scratch
- scala tutorial for java engineers
- understand scala type system and pattern matching
- onboard engineers to scala programming
- study functional programming in scala
- find scala learning materials with examples

## When to choose
- you want a free, structured introduction to Scala fundamentals
- you are an experienced engineer new to Scala and want to get productive quickly
- you prefer learning via REPL-driven lessons covering collections, pattern matching, and types

## When to avoid
- you need up-to-date coverage of the latest Scala versions and features
- you want interactive exercises or video courses rather than written text
- you need a comprehensive Scala reference rather than an introductory tutorial

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: documentation
- domain: programming-languages, tutorials, education
- platform: jvm
- tags: scala, tutorial, jekyll, twitter, functional-programming, web-server

## Member repositories
- twitter/scala_school (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:14.686790+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:31:09.892421+00:00, confidence not recorded.
  - readme: https://github.com/twitter/scala_school (fetched 2026-08-28T04:08:14.686790+00:00, sha 8bc242cd9835)
  - homepage: https://twitter.github.io/scala_school (fetched 2026-08-29T09:24:53.357504+00:00, sha 39fafd9ac9cc)
- Data as of 2026-08-30T08:39:29.467469+00:00.