A group of fish or a group of marine mammals such as porpoises, dolphins, or whales.
'school' is correct and very much usable in written English. You can use it as a noun, verb, or adjective when talking about education, learning, knowledge, or related topics. Example: My father taught at an elementary school for many years.
He renamed months of the year in honour of himself and his mother, and wrote a lifestyle guide, the Ruhnama, which became required reading for high school and university students.
In a reference to Cameron's inner circle, she added: "I don't hold the fact that someone went to public school against them.
I don't hold [against them] the fact that they haven't had the breadth of experience that some of us who didn't go to public school have had.
Among them is Holly Dolan, a "school healthcare educator," who came down from Pennsylvania because of her "frustration at the lack of understanding of the reforms".
But poor children in Stoke-on-Trent start school two years behind their peers in leafier parts of the country.
"Even as he was encouraging young people to reach for greater heights for themselves, he was working to attain his own educational goals," the school said.
Teachers who obsessively police school uniforms might also do well to bear this in mind.
Being a terminologist, I care about word choice. Ludwig simply helps me pick the best words for any translation. Five stars!
Maria Pia Montoro
Terminologist and Q/A Analyst @ Translation Centre for the Bodies of the European Union