Is it a state run school? If so it may have had a number. e.g. no.7 Primary. If so it will still have the same number if it exists as a seperate school still - not absorbed into a bigger school.

I see this thread has now degenerated into the usual pissing contest.

For someone who has just arrived, you know more about Kunming than people who have lived here for several years. Thank you for your input.

I am not a nutritionist, but had to do food hygiene courses. I am an expert in nothing.

If you get diarrhea then what the OP suggests as remedies will be useful. But the causes of being sick from chow houses are many, and oil is most probably not one of them.

The reaction from recyc are not obvious, in fact there probably is no reaction from the oil. Recycle oil is filtered oil. It will reach the same temperatures as fresh oil in cooking. Most bacteria cannot stand the tmps. All fried food places in the west will filter the oil at least once when it darkens. It is considered good management.

Gutter oil. One of the problems with gutter oil is that you cannot tell the difference between gutter oil and fresh oil in a laboratory. The gutter oil has been refined in same process and technology as bio deisel. If a lab cannot tell the difference, then what is the difference. Gutter oil, may be immoral but have yet to see any reports that it is harmful.

Some estimate that 10-20% of all cooking oil in china is recycled/gutter oil. the OPs supposition would mean that 10-20% of china's populations are sick most of the time.

BTW you can get safe food in many places in the city but you can get food poisoning anywhere.

Brick factory? Nah! More likely to wash yer brains or hold ya to ransom than that. I always doubt freebies, especially from religios and time share orgs.