Guide
The scientific Specialities one by one: what you actually do, and what they open
Most Specialities are chosen from a title and a rumour. This guide says what is actually inside each one, what it genuinely opens afterwards, and the specific trap of each — the reason people regret it, which is never the same from one Speciality to the next.
In short
- Three Specialities in Première, four hours each. Two in Terminale, six hours each. Those two final ones are what higher education reads.
- Physics-Chemistry is not the option for people who dislike maths — it is maths applied, with units on top.
- Computer Science is programming, not computer skills. Engineering Science is analysing real systems, not technology lessons.
- Biology is the most frequently underestimated: it demands as much rigour as the others, plus a great deal of memory.
How it works, in two lines
Three Specialities are chosen at the end of Seconde and followed through Première, at four hours a week each. At the end of Première one is dropped; the two kept move up to six hours a week in Terminale. Everything that follows — applications, preparatory classes, schools — reads those two.
This guide describes the content. The strategy — which pair to build, according to which target — is the subject of choosing your Specialities for a scientific path.
The entry ticket
Mathematics
Sequences, second-degree equations, differentiation, trigonometry, scalar product, conditional probability in Première; then limits, continuity, logarithm and exponential, integration, vectors in space and random variables in Terminale. The step up between the two years is real: Première still rewards technique, Terminale demands proof.
- Opens: every scientific preparatory class, engineering schools, science degrees, economics, computing — and it is required, not merely recommended, for nearly all of them.
- The trap: dropping it at the end of Première and taking the three-hour option instead, believing the two are equivalent. They are not, and the door does not reopen.
The broadest partner
Physics-Chemistry
Constitution and transformation of matter, motion and interactions, energy, waves and signals. In Terminale: reaction kinetics, acid-base equilibria, Newtonian mechanics, wave optics, energy conversions. Laboratory work runs throughout, and it is assessed.
- Opens: the widest range of scientific preparatory classes when paired with maths, plus medicine and health, chemistry, materials, energy.
- The trap: choosing it as a way of doing science without maths. It is the opposite — nearly every exercise is an algebraic manipulation with units, and a student weak in algebra fails here before failing in maths.
The most underestimated
Biology and Earth Sciences
Genetics and evolution, the Earth and climate, the human body and health. A large body of knowledge to hold, and above all a demanding exercise: reading a set of documents, extracting what is relevant, and building an argued answer from it.
- Opens: medicine and health, veterinary and agronomy preparatory classes, biology, geology, environmental sciences.
- The trap: taking it as the gentle science. It is the one where the volume to memorise is largest, and the reasoning is graded as strictly as anywhere else. Chosen by default, it produces the most disappointing marks of the three.
Concrete and demanding
Engineering Science
Taking a real system apart — a mechanism, a circuit, a control loop — modelling how it behaves, predicting it, and checking the prediction against the object itself. Mechanics, electricity, information and control, plus a substantial project carried through the year.
- Opens: technological preparatory classes, engineering schools recruiting straight after the Baccalauréat, and everything to do with industry, robotics and design.
- The trap: treating it as a replacement for Physics-Chemistry. It is an excellent second Speciality, but a target that explicitly expects Physics-Chemistry will not accept it in exchange — check the requirements before swapping.
Programming, for real
Computer Science
Programming in Python, how data is represented, algorithms and their cost, databases and queries, networks, and how a machine is actually built. It is a scientific subject with its own proofs, not a set of practical skills.
- Opens: the computing-oriented preparatory classes, engineering schools, computer science degrees, data and cybersecurity courses.
- The trap: choosing it because one likes computers. Liking a screen and building an algorithm are unrelated. Those who thrive here are those who liked maths first — the subject is far closer to maths than to technology.
The two Terminale options, which are not Specialities
They are added on top of the two remaining Specialities, and they are mutually exclusive — which one is available depends on a decision already taken.
- Maths expertes — for those who keep the Maths Speciality. Arithmetic, complex numbers, matrices: almost exactly the first term of a scientific preparatory class. Not formally required anywhere, genuinely useful everywhere.
- Maths complémentaires — for those who give up the Maths Speciality. Enough for medicine, economics and several vocational degrees. Not enough for a scientific preparatory class or for most engineering schools.
What I observe
Almost every regret I hear has the same shape: the Speciality was chosen on its name. Computer Science because of computers, Physics-Chemistry to avoid maths, Biology because it looked gentler. Half an hour spent looking at what is really inside — an actual exercise, an actual chapter — prevents two years of the wrong subject.
And the other Specialities?
I teach the scientific ones, so those are the ones I describe from the inside. The others exist and are entirely respectable choices — here is what they lead to, in one line each, so that the picture is complete.
- Economics and Social Sciences — economics, sociology, political science. Business schools, their preparatory classes, political studies, economics degrees. Combined with maths, it is the strongest pair for business preparatory classes.
- History, Geography, Geopolitics and Political Science — the most demanding in reading and essay writing. Political studies, law, journalism, literary preparatory classes.
- Humanities, Literature and Philosophy — reading and argument. Literary preparatory classes, letters, philosophy, law, communication.
- Foreign Languages, Literatures and Cultures — a language studied at the level of its literature, not of conversation. Translation, international business, language degrees.
- Arts (visual arts, cinema, theatre, music, dance, history of art) — art schools, architecture, cultural professions.
- Classical Literatures and Cultures and Physical Education and Sports Culture — the two rarest. The first is a real distinguishing mark in a literary file; the second leads to sports science.
One source, and only one
Which Specialities a school actually opens varies from one school to the next, and the official requirements of each course are republished every year on the national application platform. This guide describes what is stable — the content and what it leads to. For a given year and a given school, only those two sources count.
If you remember one thing
Ask to see an actual exercise from each Speciality being considered, taken from the Terminale year rather than the first weeks. Nothing else — no brochure, no open day, no older sibling's opinion — tells a student as reliably whether he will still want to be there in eighteen months.
Choosing on the content, not on the name
Twenty minutes, free and without commitment, to go through the combinations that actually fit your child. For the choice in full, there is a separate guidance session.
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