trisher, in regard to your above post the HSE cannot become involved in any situation unless they are invited to do so by an employer, industry, sector or the government. The exception to the above is where there has been under legislation a reportable accident or incident or where a safety audit has been carried out that reveals serious safety hazards in a workplace.
Therefore in the above, I believe that an approach by the trade union(s) involved with state education in Britain would bring them to engage in the current Schools situation. Should they then come forward with any solutions, those solutions could then be put forward as guidance or even a recommend directive to the government.