UPDATED for 2016/2017 SCHOOL YEAR! I made an .ics file of the Irvington NY School District 2015-2017 Calendar that you can import into your outlook or google calendar. Woot! Here it is embedded in this page — you can bookmark this page.
Irvington NY School District 2015 – 2017 Calendar
The PDF from the district is here:
Irvington NY School District 2016 2017 Calendar