Mark Twain Elementary - School District Calendar - Richardson Isd - 2019-2020
This Richardson Isd instructional academic school calendar is extremely important as it keeps you informed of Mark Twain Elementary grading periods, early dismissal dates, staff development days and holidays for the Mark Twain Elementary calendar school year 2019-2020. 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 Richardson Isd 2019-2020 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.
