Courses are offered year-round in 8-weeek sessions. Each session is equivalent to 0.5 units, or the span of one traditional high school semester. Most courses require attendance in two sessions for one high school unit to be earned. Applications for admission are accepted on an on-going basis for enrollment in six sessions annually.
Applications for admission are accepted on an on-going basis for enrollment in six course sessions annually. Students can also enroll in single courses year-round, based on availability.
2008/2009
| Summer 1 Registration deadline | May 9, 2008 |
| Summer 1 | May 27 - July 20, 2008 |
| Summer 2 Registration deadline | May 30, 2008 |
Summer 2 |
June 16 - August 10, 2008 |
| Fall 1 Registration deadline | August 8, 2008 |
Fall 1 |
August 25 - October 19, 2008 |
| Fall 2 Registration deadline | October 10, 2008 |
Fall 2 |
October 27 - December 21, 2008 |
| Spring 1 Registration deadline | January 9, 2009 |
| Spring 1 | January 26 - March 22, 2009 |
| Spring 2 Registration deadline | March 13, 2009 |
| Spring 2 | March 30 - May 31, 2009 |
| Summer 1 Registration deadline | May 15, 2009 |
| Summer 1 | June 1 - July 19, 2009 |
| Summer 2 Registration deadline | June 5, 2009 |
| Summer 2 | June 22 - August 16, 2009 |
OLO Recognized Holidays
Labor Day
Thanksgiving
Veterans Day
Christmas Break
Martin Luther King Day
President's Day
Easter Vacation (April 10 - 17, 2009)
Memorial Day
Independence Day