By any commercial measure the IB is thriving. By the measure that matters to parents, what is actually happening in classrooms, the picture is less flattering.
Accreditation tells parents very little about what is actually happening in the classroom
The IB badge does an enormous amount of work before a parent has set foot inside a classroom. It sits in the bio of the school's Instagram grid, in the hero block of the website, on the boards behind reception. The implication is consistent: this place has been vetted, by an international body, against an international standard. The reality is more modest. Accreditation tells you that a school has been licensed to deliver a curriculum. It does not tell you how well it is being delivered.
A head of secondary at an IB school in Singapore put it to us bluntly: accreditation teams, in his experience, "hand out certificates rather liberally, almost like distributing candy." A curriculum coordinator who has worked in two IB schools in Bangkok described his previous school as excellent and his current one as a place that uses the IB framework "as a means to closely oversee every facet of teaching, planning, and reporting." Same curriculum. Same accreditation. Two completely different jobs.
The IBO has form on this. After the 2020 grading episode, when results were generated by an algorithm rather than examiners, a UK deputy head wrote publicly to the Education Secretary describing the grades as "randomly generated" and calling it a "scandal" that had cost students university places. It was an unusually loud version of a quieter point heads make all the time: the IBO's authority over what happens in classrooms, and over the grades attached to them, is less hands-on than the brand suggests.
The consequence is that two IB schools, in the same city, can deliver radically different educations. Same three letters on the website. Same authorised-school status. Different teachers, different leadership, different culture, different outcomes. The badge tells a parent which curriculum is on the timetable. It does not tell them which one is being taught well. That distinction is the one that actually matters, and it is the one the brand is least willing to draw.
The MYP is the weak link, and teachers know it
If there is one part of the IB that experienced international school teachers will quietly steer you away from, it is the Middle Years Programme. The Primary Years Programme has its admirers. The Diploma is genuinely strong. The MYP sits between them and, in too many schools, collapses into a worksheet factory dressed up as inquiry.
The IB will point you to research that says otherwise. A multi-site study by the Oxford University Centre for Educational Assessment, commissioned by the IB and conducted in Australia, England, and Norway, found that MYP students scored significantly higher on a standard critical thinking test than peers in national curricula. That finding is real, and it deserves to be on the table. It is also not the conversation teachers are having about the MYP day to day. Selection effects in IB schools, an IB-funded research programme, and a comparison against unevenly implemented national curricula all sit underneath the headline result. The teachers we have spoken to are not denying that some MYP students learn to think well. They are describing the variance and the workload it takes to get there.
A long-serving examiner who teaches across both MYP and DP described the programme to us in flat terms. The PYP, in his view, "works well in upper primary." The MYP, he said, "leaves much to be desired." A head of department at an IB school in Kuala Lumpur told us the MYP, in practice, becomes a sequence of forced research tasks and "inquiry" projects that crowd out the actual subject practice students need, particularly in the arts and the sciences. The framework asks teachers to perform inquiry in subjects where direct instruction would serve the student better. The students notice. The teachers notice. The marketing does not.
The verdict that should worry parents most is the one some experienced international school heads will give you off the record. Asked what curriculum stack they would put their own child through, the recommendation is consistent: PYP through to the end of primary, a national curriculum (typically British) through the middle years, then back to the IB for the Diploma. Skip the MYP entirely. That is not a marketing line. It is what the people closest to the programme do with their own children.
The DP's inquiry branding has drifted from the classroom reality
The Diploma Programme is the strongest thing the IB has. It is academically serious, internationally portable, and it still earns its reputation in good schools. That should be said clearly before anything else. The crack here is narrower, but it matters. The way the DP is sold and the way it is taught are no longer the same conversation.
The IB's public language leans heavily on inquiry, independent thinking, and the cultivation of curiosity. The classroom reality, by the time students reach Year 12, is something else. A DP coordinator with around ten years inside the programme put it to us simply: "the DP revolves around examinations." The IB's claim to promote inquiry, in his view, "feels disingenuous" once you watch how the final two years actually run. The Extended Essay and Theory of Knowledge sit on the edges. The centre of the programme is six subjects, internal assessments, and a terminal exam series that looks, from the inside, a great deal like the system the IB was designed to be an alternative to.
The numbers reinforce the point rather than soften it. In the May 2024 session, around 15.5 percent of candidates failed to clear the diploma threshold of 24 points and only around 9.3 percent scored 40 points or more. The DP is a high-stakes, high-failure exam product. That is not, in itself, a criticism. It is, however, hard to square with a brand built on inquiry and the whole student.
Recent reform reads the same way. The new DP History course, with first assessment in 2028, has cut SL teaching hours to 150 and HL to 240, narrowed Paper 2 to a single thematic study, and reframed the syllabus around concept-led inquiry. The IBO presents this as modernisation. Inside the profession, the read is more mixed: a leaner subject is also a more viable subject, and "viability" is doing a quiet amount of work in the reform language. None of this makes the DP a weak qualification. It makes the gap between the brochure and the classroom larger than parents are usually told.
The IBO behaves like a commercial organisation, and it shows in the product
The International Baccalaureate Organization is, in practice, a business. A non-profit one, registered in Switzerland, but a business nonetheless. It took in around a quarter of a billion dollars last year. It has a brand to protect, markets to grow into, and revenue lines to defend. None of that is disqualifying. It is, however, a useful frame for reading the things the IBO does that parents and schools tend to take at face value.
Start with professional development. According to a head of department who has run IB workshops himself, the IBO's online workshops sit at around USD 500 per teacher, per workshop, in the open market. The consensus among the teachers we have spoken to is unprintable. He described them flatly as "a total cash grab." Attendees report using AI to complete the assignments, getting certified anyway, and walking away with nothing they could not have read in an afternoon. For an organisation built on the language of pedagogical rigour, the workshop product looks suspiciously like a margin business.
Text selection tells a similar story. Teachers preparing students for Paper 1 in Language A have noted, with increasing irritation, how cautious the prescribed text lists have become. The reading is dull, the politics are sanded off, and the suspicion among experienced examiners is that the IBO is protecting revenue in conservative markets rather than choosing the strongest texts. A former IB examiner now teaching A-Levels described the IBO to us as "a business driven by profit" hiding behind higher-purpose branding.
AI policy is the third example, and it is the one with the clearest timeline. ChatGPT was released in November 2022. The IBO's first formal AI guidance for schools and students did not arrive until early 2023, and substantive policy on assessment integrity continued to lag classroom reality through 2024 and into 2025. For a curriculum that markets itself on contemporary skills and critical thinking, that pace was conspicuous. Teachers improvised. Students experimented. The IBO caught up.
The point is not that the IBO is uniquely cynical. Cambridge, Pearson, and the College Board are all commercial actors too. The point is that parents and schools tend to grant the IBO a different kind of authority, a quasi-academic one, and the IBO has been content to let them. Reading it as the business it is changes the questions you ask of it.
The IB was ahead of its time. The sector has caught up
The most generous reading of the IB is also the most damning one. In 1968, and for most of the thirty years that followed, the IB was a genuine innovation. International mindedness, inquiry-based learning, a coherent throughline from primary into the Diploma, an explicit attempt to educate the whole student rather than the exam candidate. None of that was standard practice in the schools the IB was competing with. By the late 1990s, the IB had earned its reputation as the gold standard of international education on the strength of ideas the rest of the sector had not yet absorbed.
The sector has now absorbed them. Inquiry-based learning is not a differentiator in 2026. It is the default. Strong British curriculum schools run inquiry units in primary and project-based work in the middle years. American curriculum schools have built equivalent structures around AP Capstone and the better state standards. National curricula in Singapore, Finland, and increasingly the Gulf have moved in the same direction. The IB has not stood still in absolute terms. It has stood still relative to a sector that has spent twenty years catching up.
The question to ask of the IB in 2026 is not whether it is good. In the right school, with the right teachers, it remains a serious education. The question is whether it is uniquely good, in the way the brand still implies and the price still demands. Increasingly, it is not. The cracks are not signs of collapse. They are the marks of a curriculum that was once ahead of the field and is now, in important ways, simply inside it.
