School 21 - School District Calendar - Yonkers City School District - 2026-2027

This Yonkers City School District instructional academic school calendar is extremely important as it keeps you informed of School 21 grading periods, early dismissal dates, staff development days and holidays for the School 21 calendar school year 2026-2027. As a parent and or student, you will find yourself needing this information on a regular basis, so please "like" and bookmark this page in a visible location within your favorite browser. The legend for this Yonkers City School District 2026-2027 calendar is at the bottom of the page. If you are browsing on your PC there is another copy of the legend in the right hand column.