Fall 2009 | |
| July 1 (Wednesday) | Deadline to apply for September degree |
| July 24 (Friday) | Last day for September doctoral candidates to deliver approved dissertation drafts to dean |
| August 14 (Friday) | Last day for September masters candidates to submit unbound thesis copies to the Registrar's Office; Last day for September doctoral candidates to complete all degree requirements |
| August 20 (Thursday) | First Year Student Check-In/Freshman Orientation |
| August 24 (Monday) | Registration Day; Classes begin |
| August 28 (Friday) | Last day web registration; Last day to add courses without instructor's signature |
| September 4 (Friday) | Last day of registration; Last day drop/add without a "W" |
| September 6 (Sunday) | Degree awarding date |
| September 7 (Monday) | Labor Day classes held |
| September 11 (Friday) | Last day to select or cancel pass/fail grading |
| September 19 (Saturday) | Rosh Hashanna |
| September 22 (Tuesday) | Four o'clock exams Day 1 |
| September 23 (Wednesday) | Four o'clock exams Day 2 |
| September 24 (Thursday) | Four o'clock exams Day 3 |
| September 28 (Monday) | Yom Kippur |
| September 30 (Wednesday) | Four o'clock exams Day 4 |
| October 1 (Thursday) | Four o'clock exams Day 5 |
| October 5-6 (Monday-Tuesday) | Pacing Break -no classes |
| October 14 (Wednesday) | Mid-term grades due |
| October 28 (Wednesday) | Four o'clock exams Day 1 |
| October 29 (Thursday) | Four o'clock exams Day 2 |
| November 2 (Monday) | Applications for January degree due |
| November 3 (Tuesday) | Four o'clock exams Day 3 |
| November 4 (Wednesday) | Four o'clock exams Day 4 |
| November 5 (Thursday) | Four o'clock exams Day 5 |
| November 9-20 (Monday-Friday) | Registration for Spring |
| November 10 (Tuesday) | Last day to withdraw from a course with a "W"; Last day for January doctoral candidates to deliver approved dissertation drafts to dean |
| November 24 (Tuesday) | Last day for hourly exams |
| November 25-27 (Wednesday-Sunday) | Thanksgiving Vacation |
| December 4 (Friday) | Last day of classes; Last day to drop a course with a WP/WF grades; Last day for January master's degree candidates to submit unbound thesis copies to the Registrar's Office; Last day for January doctoral degree candidates to complete all degree requirements |
| December 5 (Saturday) | Review-consultation-study period for Tuesday classes |
| December 7 (Monday) | Review-consultation-study period for Monday classes |
| December 8 (Tuesday) | Final exams begin |
| December 16 (Wednesday) | Final exams end |
Spring 2010 | |
| January 17 (Sunday) | Degree awarding date |
| January 18 (Monday) | First day of class; Registration |
| January 22 (Friday) | Last day web registration; Last day to add courses without instructor's permission |
| January 29 (Friday) | Last day for spring registration; Last day to drop a course without a "W" |
| February 5 (Friday) | Last day to select or cancel pass/fail |
| February 17 (Wednesday) | Four o'clock exams Day 1 |
| February 18 (Thursday) | Four o'clock exams Day 2 |
| February 23 (Tuesday) | Four o'clock exams Day 3 |
| February 24 (Wednesday) | Four o'clock exams Day 4 |
| February 25 (Thursday) | Four o'clock exams Day 5 |
| March 1 (Monday) | Last day for filing applications for May graduation |
| March 8-12 (Monday-Friday) | Spring break |
| March 15 (Monday) | Classes resume; mid-term grades due |
| March 30 (Tuesday) | Passover, classes held on weekdays |
| April 1 (Thursday) | Four o'clock exams Day 1 |
| April 2 (Friday) | Good Friday classes held |
| April 5 (Monday) | Four o'clock exams Day 2 |
| April 6 (Tuesday) | Four o'clock exams Day 3 |
| April 7 (Wednesday) | Four o'clock exams Day 4 |
| April 8 (Thursday) | Four o'clock exams Day 5 |
| April 9 (Friday) | Last day to withdraw from a course with a "W"; Last day for May doctoral candidates to deliver approved dissertation drafts to dean |
| April 12-23 (Monday-Friday) | Registration for Fall and Summer |
| April 23 (Friday) | Last day for hourly exams |
| April 30 (Friday) | Last Class Day; Last day to drop a class or withdraw with WP/WF grades; Last day for May master's candidates to submit unbound thesis copies to the Registrar's Office; Last day for May doctoral candidates to complete all degree requirements |
| May 1 (Saturday) | Review-consultation-study period for Tuesday classes |
| May 3 (Monday) | Review-consultation-study period for Monday classes |
| May 4 (Tuesday) | Final exams begin |
| May 12 (Wednesday) | Final exams end |
| May 24 (Monday) | University Commencement Day |
Lehigh University defines a semester as 14 weeks and 70 individual days of instruction to be followed by 2 days of a reading-consultation and study period in preparation of 9 consecutive calendar days of final examinations with four periods per day of 3 hour exam blocks. The summer term is 12 weeks with measured sessions. The academic year consists of one summer and two regular terms.