* Institution: Different schools (colleges, universities, high schools) have different academic calendars.
* Level of education: High schools, colleges, and universities all have different schedules.
* Location: Schools in different countries and even different regions within a country may have varying start dates.
* Specific semester: Fall, spring, and summer semesters all have different start dates.
To find out when a *specific* school's new semester starts, you need to check that school's website or academic calendar.