Life in the school laboratory used to be fun (and dangerous) before they decided to wrap everyone in cotton wool. I can't imagine what students get to do these days, if anything. Or is it just watching demos while a lab assistant in a sterile, fireproof, space-suit does the actual stuff behind a shatter-proof glass wall?
We get to do some things, but because the technicians are legally responsible for the safety, even if they aren't in the room while the experiment is going on, we tend to shut down anything too dangerous because the teachers (moreso than the kids in my experience) have absolutely no clue what they are doing.
You don't have to have a higher qualification than a GCSE in science to teach it to GCSE students once you have your degree, so you can get a Biology degree and not start teaching until you are 30 and teach kids chemistry without having studied it for 15 years. And most of them haven't. Subject knowledge is generally atrocious among teachers, as is their understanding of basic lab safety, and it gets worse the older and more 'experienced' they get, because they don't like to be told they are doing things wrong like a new teacher will.
My head of department who's been teaching for a decade only learnt that current is a flow of negatively charged electrons in June at some training we went to, and it hurt my brain to see it unfold.
So, with that level of subject knowledge holding our careers in their hands, we tend to shut down everything except the most simple experiments unless we are there to figuratively hold their hands.