Longman Dictionary of Contemporary English
Wikipedia
Summer vacation (also called summer holiday or summer break) is a school holiday in summer between school years and the longest break in the school year. Students and instructors are off school typically between 6 and 14 weeks, depending on the country and district. In America, Ireland, Italy, Greece, Lithuania, Romania and Russia, the summer break is normally three months, compared to six to eight weeks in Australia, Britain, The Netherlands, Canada, and Germany.
Usage examples of "summer vacation".
So anyway, there we weresitting in my room the very first day of summer vacation.
Since school was out for summer vacation, that meant someone was home at both their houses almost all day, every day.
Still, it was summer vacation for the few kids who lived in the building.
I know they get wrapped up in their own games and projects during summer vacation -lining bees back to their hives or playing ball or kick-the-can or whatever.
They were in their current condition because it was a foul wetness down here ('How I Spent My Summer Vacation,' a theme by Patrick Hockstetter - 'I spent it dead in a tunnel!
Dagny and Rearden were smiling, as if posing for snapshots of a summer vacation.
I am pretty certain, though sometimes I have my doubts, that in his last or next to last letter -- I lost the whole packet and my diary as well near Cottbus -- there was some mention of the barge which had its big day before the onset of the summer vacation of '42, but whose glory paled in the course of the summer.
His phone had rung at 4:30 that morning and he had been called back from his vacation cabin on Lac aux Ecorces in the Laurentide forests of Quebec, where only two days earlier he and his family had started their three-week summer vacation.
He could not be tied in with any illegality, so he had invented the fictitious young American named George, and had described him in a way that would fit half the young Americans in Mexico on summer vacation.
Little Yuri was now at school but staying with his grandparents during the summer vacation.
Terry Martin had worked late, for although the undergraduates were away for the long summer vacation, he had lectures to prepare, and because of the specialized vacation courses the school also ran, he was kept quite busy even through the summer months.