IB courses are the subjects taught under the International Baccalaureate (IB) program, a rigorous, globally recognized school curriculum designed to prepare students (usually 16–19) for university and to develop strong critical thinking, research, and global awareness skills.

What are IB courses, in simple terms?

Think of IB courses as high‑school classes that are structured like mini college courses: they are organized, demanding, and internationally standardized.

They emphasize analysis, writing, independent research, class discussions, and sometimes oral presentations instead of just memorizing for tests.

  • They belong to the International Baccalaureate Diploma Programme (IBDP), a two‑year program usually taken in the last two years of high school.
  • Successful IB Diploma students can often receive advanced standing or university credit at many universities worldwide.

In forums and counseling blogs, people often describe IB courses as “college‑style classes in high school” because of the workload, essays, and research expectations.

The 6 IB subject groups

For the full IB Diploma, students normally take six subjects , one from each of several groups.

  1. Group 1 – Studies in Language and Literature
    • Usually the student’s main language (for example, English A Language and Literature).
 * Focus on literary analysis, language, culture, and critical reading.
  1. Group 2 – Language Acquisition
    • A second/foreign language (e.g., Spanish B, French B, Mandarin, etc.).
 * Aims to build communication skills and cultural understanding in another language.
  1. Group 3 – Individuals and Societies
    • Humanities and social sciences such as History, Economics, Geography, Psychology, Global Politics.
 * Focus on understanding societies, cultures, economies, and human behavior.
  1. Group 4 – Sciences
    • Biology, Chemistry, Physics, Computer Science, Environmental Systems and Societies, and more.
 * Includes practical lab work and scientific investigation skills.
  1. Group 5 – Mathematics
    • Typically courses like Mathematics: Analysis and Approaches or Mathematics: Applications and Interpretation, offered at different levels.
 * Builds higher‑level mathematical reasoning and problem‑solving.
  1. Group 6 – The Arts (or another subject)
    • Visual Arts, Music, Theatre, Dance, Film.
 * Students can instead choose an extra subject from Groups 1–4 (for example, another science instead of an art).

HL vs SL: course difficulty levels

IB courses come in two main levels: Higher Level (HL) and Standard Level (SL).

  • Higher Level (HL)
    • Deeper, more content‑heavy, with more teaching hours (IB recommends about 240 hours).
* Colleges may value HL courses more for placement or credit.
  • Standard Level (SL)
    • Slightly less depth and fewer teaching hours (about 150 hours).
* Still rigorous and taught with the same IB philosophy.

To earn the full IB Diploma, students typically take 3–4 subjects at HL and the rest at SL.

Core parts beyond “normal” courses

When people ask “what are IB courses,” they often also mean the IB core , which is required for the full Diploma and sits on top of the six subjects.

Key core components:

  1. Theory of Knowledge (TOK)
    • A unique course about the nature of knowledge —how we know what we claim to know.
 * Assessed through an oral presentation and a 1,600‑word essay.
  1. Extended Essay (EE)
    • A 4,000‑word independent research paper in a subject of the student’s choice.
 * Teaches university‑style research and academic writing skills.
  1. CAS (Creativity, Activity, Service)
    • Structured involvement in arts/creativity, physical activity, and community service.
 * Encourages students to be balanced, reflective, and engaged with their communities.

How IB courses feel day to day

From student and counselor discussions, common themes about IB courses include:

  • Workload and rigor
    • Regular essays, problem sets, labs, presentations, and projects.
* Long‑term assignments like the Extended Essay and internal assessments require time management.
  • Skills they build
    • Critical thinking and argumentation in essays and TOK.
* Research skills via the Extended Essay and subject investigations.

* Communication skills through discussions and oral presentations.
  • International and holistic focus
    • Syllabi are globally standardized, so students in many countries study similar material.
* There is a strong emphasis on global issues, intercultural understanding, and seeing connections between subjects.

TL;DR: IB courses are structured, challenging high‑school subjects that are part of an international two‑year program, with six subject groups plus core components (TOK, Extended Essay, CAS), designed to prepare students for university and to develop global, research‑oriented, and critical thinking skills.

Information gathered from public forums or data available on the internet and portrayed here.