[deviation]

Jumping in here with relevant experience - because you're absolutely right.

In 8th grade (~16 years ago) my substitute biology teacher organised a "Water drinking competition" poised to elevate our understanding of stomach capacity, etc.

Two of us went to hospital, and ~5 (including myself) had to take multiple days off of school and recover.

It's very dangerous. He lost his job.

[suprjami]

There was a lady who died from the same thing:

https://abcnews.com/GMA/jury-rules-radio-station-jennifer-st...

[csomar]

What was exactly his thinking here? Do biology teachers study biology because that’s kind of the first things you learn (saline concentration, kidney, etc…)

[ElevenLathe]

At least where I am, substitute teachers don't have to study anything in particular at all. You simply need to have completed X number of credit hours at an accredited institution, no actual degree or certificate is required and the coursework can be literally anything. As a newly-graduated history major I signed up to substitute teach out of desperation, and was sent everywhere from kindergarten to calculus.