De Smet Jesuit's ACT/SAT High School Code Number: 260-781
| ACT Test Dates | Registration Deadline | Late Registration |
| September 10, 2011 | August 12, 2011 | August 13-26, 2011 |
| October 22, 2011 | September 16, 2011 | September 17-30, 2011 |
| December 10, 2011 | November 4, 2011 | November 5-18, 2011 |
| February 11, 2012 | January 13, 2012 | January 14-20, 2012 |
| April 14, 2012 | March 9, 2012 | March 10-23, 2012 |
| June 9, 2012 | May 4, 2012 | May 8-18, 2012 |
ACT Fee (No Writing) - $34
ACT Plus Writing - $49.50
Late Fee - Add $21
| SAT Test Date | Registration Deadline | Late Registration |
| October 1, 2011 | September 9, 2011 | September 21, 2011 |
| November 5, 2011 | October 7, 2011 | October 21, 2011 |
| December 3, 2011 | November 8, 2011 | November 20, 2011 |
| January 28, 2012 | December 30, 2011 | January 13, 2012 |
| March 10, 2012 | February 10, 2012 | February 24, 2012 |
| May 5, 2012 | April 6, 2012 | April 20, 2012 |
| June 2, 2012 | May 8, 2012 | May 22, 2012 |
SAT Fee - $49
Late Fee - Add $26