noblegiraffe
The schools conditions data summary findings from 2021
From your link, the findings were published in 2021 but the data collection programme ran from 2017-2019.
the government ... commissioned one massive safety survey
The government commissioned a data collection programme, not a safety survey.
What also seems ridiculous is to berate headteachers for not knowing whether their schools contain RAAC when they've had various surveys of their school that haven't uncovered it (therefore they think they're ok) only to be told that the surveys are crap and wouldn't find it.
Did the headteachers (and responsible bodies) read the 2017 guidance?
The CDC is a data collection programme; it is not a full condition survey of the type often commissioned locally by responsible bodies. The ESFA will collect data on all government maintained schools in England. We recognise that schools and their responsible bodies commission asset management surveys which may appear similar in scope. The CDC is designed to achieve the particular objectives detailed below and be consistent across the school estate...
Limitations: The CDC cannot on its own, provide enough information to support a comprehensive condition report for any individual establishment that is suitable for asset management planning. This is because: it is not invasive (only visible condition is inspected) it is not structural (critical structural repairs may not be identified) it does not report on hazardous materials (principally asbestos) it does not address critical health and safety requirements such as fire and intruder alarm functionality (although surveyors observing major health and safety issues will report these directly to the school) it does not take into account building use or capacity it does not provide descriptions of defects and remedies or cost information for schools or responsible bodies...
Comparison with locally held condition data. The CDC data does not replace locally held condition surveys. The information obtained during the CDC programme does not and is not intended to replace any of the current arrangements that exist at responsible body or school level to gather detailed building condition survey data. CDC data is less detailed than condition data held by schools or responsible bodies. CDC does not involve an intrusive survey. This means that surveyors will undertake a visual inspection only and will not access roof voids, remove ceiling tiles or test any ‘plant’ equipment such as boilers and heaters whilst on site. However, data collected during the CDC may be a useful supplement to locally held condition data, and be helpful as a starting point for the development of local maintenance programmes. It should not be viewed as a replacement.
https://www.gov.uk/guidance/condition-data-collection-programme-information-and-guidance