High School Calendar 2009 - 2010
| Tuesday-Wednesday | August 18, 19 | New Teacher Orientation Days |
| Tuesday | September 8 | Organizational Day |
| Wednesday | September 9 | Opening of School First Quarter begins |
| Wednesday | October 14 | PSAT – Grades 9-11 |
| Friday | November 6 | First Quarter ends |
| Monday | November 9 | Second Quarter begins |
| Thursday | November 19 | Universal Visitation Day to Archdiocesan Secondary Schools |
| Wednesday | November 25 | Thanksgiving Holiday begins at close of school day |
| Monday | November 30 | Classes resume |
| Tuesday | December 8 | Immaculate Conception – Holy Day of Obligation |
| Tuesday | December 23 | Christmas Holiday begins at close of school day |
| Monday | January 4 | Classes resume |
| Monday | January 18 | Martin Luther King, Jr. Day – School Holiday |
| Friday | January 22 | March for Life Day, Washington, DC |
| Monday-Thursday | January 25, 26, 27 | Semester Assessments |
| Wednesday | January 27 | Second Quarter and First Semester end |
| Thursday | January 28 | Third Quarter/Second Semester begins |
| Sunday-Saturday | January 31-February 6 | Catholic Schools Week |
| Tuesday-Thursday | March 23, 24, 25 | TerraNova Grades 9-11 |
| Wednesday | March 31 | Third Quarter ends |
| Wednesday | March 31 | Easter Holiday begins at the close of school day |
| Tuesday | April 6 | Classes resume |
| Tuesday | April 6 | Fourth Quarter begins |
| Thursday | May 13 | Solemnity of the Ascension of the Lord – Holy Day of Obligation |
| Monday | May 31 | Memorial Day – School Holiday |
| Friday | June 4 | Fourth Quarter ends – Grade 12 |
| Wednesday-Friday | June 9,10,11 | Semester Assessments |
| Friday | June 18 | Fourth Quarter and Second Semester end |
