"high school period" is correct and usable in written English.
You can use it when referring to a specific time period spent attending high school, usually in the context of an individual's experience or accomplishments. For example: "She excelled in science throughout her high school period, earning top marks for all her exams."
Her high school period was spent at St . Timothys in Maryland, where she excelled as a student.
Then there was the equally classic high school period, when he was teased for being gay and overweight and a teacher said he was too selfish to amount to anything.
Her home town was Dalton, MA, where she attended grade school through the sixth grade, at which point she spent her junior high school period at Emma Willard in Troy, NY.
Mostly students who enter into fashion-related program were not expected to take the heavy emphasis on courses such as physics, mathematic, and sciences in their high school period.
Tomlin has always chosen protective self-coloration, from the days of Mrs. Rupert and her "hoody" high school period in which she prided herself on blending with all the differing cliques.
Similarly, 16.7% khat chewers, 17.6% alcohol drinkers and 6.2% of cigarette smokers started during high school period.
This topic is a compulsory common knowledge in Japan, and all of the subjects had already learned the topic in their high school periods.
It was, in retrospect, a tricky pitch: an action-adventure, sci-fi, romcom, teen-high-school, period, screwball comedy – even now, says Gale, they don't know where to put it in DVD racks.
Rapelye understands the intensity of the senior year of high school — a period that offers few opportunities for reflection.
He spoke passionately about his senior year of high school, the period of his public school education that he remembers most.
The CV includes the usual high school geek period, before Mr Ozzie went on to invent Lotus Notes, the hugelysuccessful email application.
