I would be interested to hear what PFM posters who are directly involved in education think. When school risk assessments w.r.t. Covid were last discussed on here, based on a small sample, it looked like they were based on government guidance. Which itself was quite weak and only addressed the ventilation problem in vague terms. Since then I have read a union report which was clearer:
https://www.unison.org.uk/content/uploads/2022/01/Checklist-Final-PDF.pdf
Ventilation
All settings should by now have access to CO2 monitors and ventilation measures should keep CO2 below 800ppm in all occupied classrooms.
The CO2 monitoring results should feed into a risk assessment, and if the levels are consistently above 800ppm, and ventilation cannot be improved, naturally or mechanically, then options include reducing the number of people in the room, reducing the length of time groups spend in the room, or temporarily vacating the room. Any areas identified as having levels of CO2 consistently above 800ppm should be provided with supplemental ventilation, such as a HEPA filtration unit. The Department for Education (DfE) is rolling out a very limited number of these units, but most schools will not be able to benefit from this scheme. We cannot recommend particular models, but this list does offer a wider range of options than the two expensive models recommended by the DfE.
Unions calling for a much better response from the government:
https://www.unitetheunion.org/news-...-for-urgent-action-on-ventilation-in-schools/
And a general complaint about the poor state of ventilation in schools as the government does little to nothing to help:
https://www.cypnow.co.uk/news/article/government-failing-on-classroom-ventilation-union-claims
And how should schools protect pupils and staff who are more vulnerable to Covid through weakened immune systems etc?
Whilst balancing all this with the need to educate efficiently and effectively and try to recover teaching time that has been lost due to Covid (schols shut, online lessons, pupil absences, staff absences, MPIs making teaching more difficult etc).