In the late 19th century a push was made for the standardization of urban and rural school calendars, and so the modern system was created.
[2] Switching to year-round schooling has some positive effects, such as allowing the opportunity for teachers to have a year-round job and more time to plan lessons and class activities while not taking as long to reteach information that students are unable to retain over their summer break, along with giving students more frequent breaks throughout the year.
Some families are in favor of the year-round calendar because they are allowed to take vacations at different times of the year rather than specific timeframes.
[citation needed] However, businesses that rely on summer leisure time are not in favor of year-round calendars.
[4] Rural areas rarely use year-round calendars because they conflict with farms' need for youth labor in summer.