Bertrand Meyer's technology+ blog

[I occasionally post on the Communications of the ACM blog. It seems that there is little overlap between readers of that blog and the present one, so — much as I know, from software engineering, about the drawbacks of duplication — I will continue to repost articles here when relevant.]

Some call it computer science, others informatics, but they face the same question: when do we start teaching the subject? In many countries where high schools began to introduce it in the seventies, they actually retreated since then; sure, students are shown how to use word processors and spreadsheets, but that’s not the point.

Should we teach computer science in secondary (and primary) school? In a debate at SIGCSE a few years ago, Bruce Weide said in strong words that we should not: better give students the strong grounding in mathematics and especially logic that they will need to become good at programming and CS in general. I found the argument convincing: I teach first-semester introductory programming to 200 entering CS students every year, and since many have programming experience, of highly diverse nature but usually without much of a conceptual basis, I find myself unteaching a lot. In a simple world, high-school teachers would teach students to reason, and we would teach them to program. The world, however, is not simple. The arguments for introducing informatics earlier are piling up:

• What about students who do not enter CS programs?
• Many students will do some programming anyway. We might just as well teach them to do it properly, rather than let them develop bad practices and try to correct them at the university level.
• Informatics is not just a technique but an original scientific discipline, with its own insights and paradigms (see [2] and, if I may include a self-citation, [3]). Its intellectual value is significant for all educated citizens, not just computer scientists.
• Countries that want to be ahead of the race rather than just consumers of IT products need their population to understand the basic concepts, just as they want everyone, and not just future mathematicians, to master the basics of arithmetics, algebra and geometry.

These and other observations led Informatics Europe and ACM Europe, two years ago, to undertake the writing of a joint report, which has now appeared [1]. The report is concise and makes strong points, emphasizing in particular the need to distinguish education in informatics from a mere training in digital literacy (the mastery of basic IT tools, the Web etc.). The distinction is often lost on the general public and decision-makers (and we will surely have to emphasize it again and again).

The report proposes general principles for both kinds of programs, emphasizing in particular:

• For digital literacy, the need to teach not just how-tos but also safe, ethical and effective use of IT resources and tools.
• For informatics, the role of this discipline as a cross-specialty subject, like mathematics.

The last point is particularly important since we should make it clear that we are not just pushing (out of self-interest, as members of any discipline could) for schools to give our specialty a share, but that informatics is a key educational, scientific and economic resource for the citizens of any modern country.

The report is written from a European perspective, but the analysis and conclusions will, I think, be useful in any country.

It does not include any detailed curriculum recommendation, first because of the wide variety of educational contexts, but also because that next task is really work for another committee, which ACM Europe and Informatics Europe are in the process of setting up. The report also does not offer a magic solution to the key issue of bootstrapping the process — by finding teachers to make the courses possible, and courses to justify training the teachers — but points to successful experiences in various countries that show a way to break the deadlock.

The introduction of informatics as a full-fledged discipline in the K-12 curriculum is clearly where the winds of history are blowing. Just as the report was being finalized, the UK announced that it was making CS one of the choices of required scientific topics would become a topic in the secondary school exam on a par with traditional sciences. The French Academy of Sciences recently published its own report on the topic, and many other countries have similar recommendations in progress. The ACM/IE report is a major milestone which should provide a common basis for all these ongoing efforts.

References

[1] Informatics education: Europe Cannot Afford to Miss the Boat,  Report of the joint Informatics Europe & ACM Europe Working Group on Informatics Education,  April 2013,  available here.

[2] Jeannette Wing: Computational Thinking, in Communications of the ACM, vol. 49, no. 3, March 2006, pages 33-35, available here.

[3] Bertrand Meyer: Software Engineering in the Academy, in Computer (IEEE), vol. 34, no. 5, May 2001, pages 28-35, available here.

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