Travel and holiday

not the sharpest tool in the shed: a polite way of saying that someone isn't very smart.Maybe John isn't the sharpest tool in the shed, but he's a good friend nonetheless.

public schools: exclusive independent schools in the UK.My friend finished a public school a few years ago.

schoolboy error: a very basic and stupid mistake.Sam made a schoolboy error on his English test.

single-sex schools: schools for either boys or girls.My brother studied in a single-sex school.

small fraction: small part.A small fraction of students managed to pass this exam.

state school: a school which is paid for by the state or country.It is hard to find a good state school nowadays.