Academic term
In most countries, the academic year begins in late summer or early autumn and ends during the following spring or summer. In Northern Hemisphere countries, this means that the academic year lasts from August, September, or October to May, June, or July. In Southern Hemisphere countries, the academic year aligns with the calendar year, lasting from February or March to November or December. The summer may or may not be part of the term system.
School holiday
In the United States, there are typically 180 school days in a year (although school years at colleges and universities are often shorter). Private schools tend to have classes for 170 days each year.
"Note:" Often in Charter Schools breaks are shorter due to the extended number of days students spend in school (200 days vs. 180 days for standard public schools).