In a move that will scramble the daily schedules of families across the city, nearly 85 percent of Boston’s 125 schools will have new start times next fall, school officials announced Thursday night.

The changes aim to let more high school students sleep in and more elementary school students get out before sunset. Boston now joins a small but growing number of school systems in Massachusetts and across the nation that have pushed high school start times later in an effort to get students to school well rested and alert. The hope is that students will perform better academically.

Continue reading on the Boston Globe website.