RIBA CPD Provider Network. CIBSE Approved CPD. IStructE Approved CPD. These logos appear on thousands of CPD invitations every year, sitting quietly in the corner of the email or the event page, doing a job that most professionals never examine closely.
Here is what the badge actually contains as information: the provider has submitted a session description meeting the relevant criteria and paid the associated fee. That is not a cynical reading of the process. It is, broadly, the published accreditation process itself.
The question worth asking is not whether accreditation is honest — it is. The question is whether a signal carried by a very large majority of sessions in a category tells you anything meaningful about any individual one of them.
Information theory, briefly
There is a precise way to state the problem, and it is worth stating precisely rather than rhetorically.
When a binary signal — accredited or not accredited — is positive for the overwhelming majority of items in a category, it conveys almost no information about any individual item. This is not a matter of opinion. It is the mathematical definition of information content, formalised by Claude Shannon in 1948: the informational value of a signal is inversely related to how predictable it is. A signal that is true for nearly everything tells you almost nothing about any one thing.
Applied here: if the great majority of CPD sessions targeting AEC professionals carry some form of professional body accreditation, the presence of that accreditation does not help a professional choose between two accredited sessions. It distinguishes accredited from unaccredited. It does not distinguish good from excellent, relevant from generic, or genuinely useful from merely compliant.
This is not a flaw unique to construction CPD. It is what happens to any binary credential once near-universal adoption erodes its discriminating power. A degree once signalled something distinct in a labour market where few people held one; as the proportion of graduates rose, the signal weakened and employers began looking elsewhere for differentiation — portfolios, interviews, work samples. CPD accreditation in AEC is approaching the same point, with one important difference: an alternative differentiating signal has, until now, simply not existed.
What accreditation was designed to signal, and what it actually signals
Accreditation was designed to provide a quality threshold guarantee — confirmation that a session meets a minimum standard of content relevance and an appropriate delivery format for the professional body’s members.
What it actually signals, in practice, is narrower: that the provider is aware of the accreditation process and has the administrative capacity to apply for it successfully.
These are not nothing. They correlate weakly with quality at the low end — a provider that cannot meet basic accreditation criteria is unlikely to be delivering a strong session. But weak correlation at the low end is not the same as differentiation at the level professionals actually need it: choosing between several comparable, similarly accredited sessions on a similar topic, where the badge offers no help at all.
There is a reason this signal persists despite its thin informational content, and the explanation is not really about accreditation bodies — it is about how professionals choose what to attend in the first place. René Girard’s concept of mimetic desire offers a useful lens here: people often select not based on independent evaluation of an option’s merits, but by observing what other credible people are choosing. A session with eighty attendees attracts more attendees not because it has been independently shown to be more valuable, but because eighty people have already attended it — and that visible popularity becomes its own justification. Accreditation reinforces this loop. It is a visible, socially legible badge that signals “this is a legitimate choice” without adding any information about whether it is a good choice relative to its accredited peers. It functions as a coordination device — a way for professionals to agree on where to show up — rather than a quality measure. And because nothing corrects for quality within the accredited pool, popular sessions become more popular regardless of their educational value, with no mechanism to interrupt the cycle.
What a useful signal would look like
A more useful signal would not ask “does this meet the minimum criteria to be accredited?” It would ask a different question entirely: what did the people who actually attended this session say they intended to do differently afterward?
That is behavioural evidence from attendees, not a self-description supplied by the provider as part of an application process. The accreditation badge answers a regulatory question — has this provider met a published threshold. The attendee signal answers a professional question — did this specific session, for the people who were actually in the room, produce something worth attending for.
These are different questions, and AEC professionals choosing between CPD sessions are, in practice, trying to answer the second one while being shown only the answer to the first.
What this doesn’t mean
Accreditation is not going away, and it should not. It serves a genuine gatekeeping function — keeping out sessions that fail even a minimum bar of relevance and delivery quality, which has real value at the bottom of the distribution.
The error is not that accreditation exists. The error is treating it as a quality indicator when its actual informational content, once you sit with the Shannon framing for a moment, is closer to a pass/fail threshold than a ranking. Thousands of AEC professionals make that category error every time they see the logo on an invitation and read it as more than it is.
FAQs
RIBA CPD Provider Network status means a provider has met RIBA’s minimum criteria for content relevance and delivery format. It does not indicate session quality relative to other accredited providers, because those criteria function as a threshold, not a ranking. With thousands of accredited sessions available, the badge distinguishes accredited from non-accredited — not good from excellent.
CIBSE Approved CPD status means a session meets CIBSE’s criteria for relevance to building services engineering and appropriate learning outcomes. The process involves content review and an annual renewal fee. It does not measure attendee outcomes or indicate a session’s effectiveness relative to other CIBSE-approved sessions.
Behavioural intent data contributed anonymously by professionals who attended a session is a stronger quality signal than accreditation status, because it reflects the actual experience of attendees rather than the provider’s self-description submitted as part of an application process. CPD Impact collects this signal for AEC CPD sessions, independently of provider involvement.
