| | Modified YR Calendar | Traditional Calendar |
| Track 1 | 46 | 36 |
| Track 2 | 29 | 29 |
| Track 3 | 21 | 38 |
| Track 4 | 47 | 41 |
| Traditional | 54 | 81 |
Information is based on the 2009-10 school calendar.
http://www.wcpss.net/Calendars/2009-10/09-10-comprehensive.pdf