saxon genitive once again :)

"The school of John" sounds highly unnatural.

99% of the time, "This is John's school" means this is where John attends or attended school. (Or possibly teaches.) (If John were the founder of a school, it could mean "This is the school that John founded.)

Thank you both for your effort.
It is highly appreciated and has helped me a lot in my frustrating studies

If you don't mind, take a look at this:

bird's nest - the nest of the bird
birds' nest - the nest of more than one bird
birds nest - nest is a verb means "birds are building up their dwellings"
(I found another one "girls school" and here I am not sure whether is it the same principle or even if this construction is possible or not)
bird nest -  if anybody do know what it means, please, let me know. My guess is that it is just two-word noun saying which "kind of animals"
has built it.

Best regards!!!
[]

Hi,

According to WordNet - bird's nest, bird nest, and birdnest  = nest where birds lay their eggs and hatch their young. The phrases, however, by themselves, do not say whether the nest is human made or bird made; additional context is required. Moreover, as you might already know, people also talk about bird's nest soup, which is made from the saliva of birds / birds' saliva.

Regarding birds nest, your interpretation is all right if you use nest as a verb. However, girls school is a school that only girls attend.

Best wishes,
Hoa Thai