Durham District School Board DDSB
Whitby, Ontario · Public · English
Students
74,810
2022-2023 enrolment
Schools
131
112 elementary · 19 secondary
First day
Tuesday, September 8, 2026
2026-2027
Last day
Tuesday, June 29, 2027
2026-2027
DDSB Calendar 2026-2027
All 2 DDSB calendars on one page: Elementary - Regular, Secondary - Regular.
Original calendar documents
Published by DDSB. Select a page to view it at full size.
EQAO performance
Students at or above the provincial standard (2022-2023, EQAO). Green means at or above the Ontario average.
Grade 3
Reading
-2.1 vs ON
Writing
-2.5 vs ON
Math
-13.8 vs ON
Grade 6
Reading
-6.2 vs ON
Writing
+2.8 vs ON
Math
-15.6 vs ON
Secondary
G9 Math
-3.7 vs ON
OSSLT
-10.6 vs ON
How DDSB ranks in Ontario
Ranked against the 76 Ontario school boards with published EQAO results, by the mean of the assessments each board sat (2022-2023).
Overall rank
#24 of 76
Percentile
69
higher is stronger
Mean at or above standard
68.4%
DDSB places highest on Grade 9 Math (#14 of 71) and lowest on Grade 6 Writing (#29 of 75).
| Assessment | At or above standard | Rank in Ontario | Percentile |
|---|---|---|---|
| Grade 9 Math | 54.3% | #14 of 71 | 81 |
| Grade 3 Math | 61.2% | #17 of 75 | 78 |
| Grade 3 Reading | 72.9% | #21 of 75 | 73 |
| Grade 3 Writing | 64.5% | #22 of 75 | 72 |
| Grade 6 Math | 47.4% | #23 of 75 | 70 |
| OSSLT Literacy | 82.4% | #25 of 71 | 66 |
| Grade 6 Reading | 82.8% | #28 of 75 | 64 |
| Grade 6 Writing | 81.8% | #29 of 75 | 62 |
Schools
131 total- Elementary schools
- 112
- Secondary schools
- 19
- Students enrolled
- 74,810
Individual school profiles for DDSB are not on HeySchool yet. The board's own directory lists them all, and the EQAO figures above already cover every one of its 131 schools.
DDSB school directory ↗