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ST Olaf's National School

Roll number: 19319O Balally Drive, Dundrum, Dublin 16

School details

Address
Balally Drive, Dundrum, Dublin 16 (D16E067)
Email
[email protected]
Phone
012956513
Principal
Ger Murphy
Ethos
Catholic
DEIS
N
Irish classification
No subjects through Irish
Gaeltacht
N
Island
N
Local authority
Dun Laoghaire Rathdown
School patron
Archbishop of Dublin
School type
Ordinary
School level
All-Through School
Planning area
Goatstown_Stillorgan_DLR

Preliminary data

The latest year shown (2025/26) is preliminary and subject to revision when the official enrolment figures are released by the Department of Education.

Data highlights

Key numbers to spot outliers or notable changes.

Summary statistics (class-level data)

Min / max / mean enrolment per class across the available years (2020/21–2024/25; preliminary year excluded from class stats).

Class Min Max Mean Years
Junior Infants 66 81 73.4 5
Senior Infants 70 80 75.8 5
1st Class 55 80 71.6 5
2nd Class 53 83 69.8 5
3rd Class 54 82 70.6 5
4th Class 54 79 65.4 5
5th Class 53 76 61.2 5
6th Class 54 78 61.2 5
Total 256 694 452.5 41

Total enrolment over time

Total and gender trends use historical records where available. Class-level data starts in 2020/21.

Enrolment by gender over time

Enrolment by class over time

Cohort progression

Track how each cohort (pupils who were in the same class in the same year) progresses through the school. Each step shows the count; the number between steps is the net change (pupils gained minus pupils lost).

Cohort 2020/21
JI 2020/21 79
-3
SI 2021/22 76
-1
1st 2022/23 75
+4
2nd 2023/24 79
+3
3rd 2024/25 82
Cohort 2021/22
JI 2021/22 81
-1
SI 2022/23 80
0
1st 2023/24 80
+3
2nd 2024/25 83
Cohort 2022/23
JI 2022/23 68
+2
SI 2023/24 70
+3
1st 2024/25 73
Cohort 2023/24
JI 2023/24 73
+3
SI 2024/25 76
Cohort 2024/25
JI 2024/25 66

Raw data by year

Years marked (preliminary) are subject to revision when official data are published.

Year Female Male JI SI 1st 2nd 3rd 4th 5th 6th Total
1974/75 256 – – – – – – – – – 256
1975/76 – – – – – – – – – – 355
1976/77 382 213 – – – – – – – – 595
1977/78 381 242 – – – – – – – – 623
1980/81 362 332 – – – – – – – – 694
1981/82 334 325 – – – – – – – – 659
1982/83 300 308 – – – – – – – – 608
1983/84 280 298 – – – – – – – – 578
1993/94 171 233 – – – – – – – – 404
1994/95 176 221 – – – – – – – – 397
1995/96 180 223 – – – – – – – – 403
1996/97 179 224 – – – – – – – – 403
1997/98 185 219 – – – – – – – – 404
1998/99 182 207 – – – – – – – – 389
1999/00 164 176 – – – – – – – – 340
2000/01 152 179 – – – – – – – – 331
2001/02 155 175 – – – – – – – – 330
2002/03 157 169 – – – – – – – – 326
2003/04 137 175 – – – – – – – – 312
2004/05 150 179 – – – – – – – – 329
2005/06 165 177 – – – – – – – – 342
2006/07 167 186 – – – – – – – – 353
2007/08 181 200 – – – – – – – – 381
2008/09 186 201 – – – – – – – – 387
2009/10 204 211 – – – – – – – – 415
2010/11 208 216 – – – – – – – – 424
2011/12 207 217 – – – – – – – – 424
2012/13 224 219 – – – – – – – – 443
2013/14 207 233 – – – – – – – – 440
2014/15 209 235 – – – – – – – – 444
2015/16 221 232 – – – – – – – – 453
2016/17 232 252 – – – – – – – – 484
2017/18 222 266 – – – – – – – – 488
2018/19 226 268 – – – – – – – – 494
2019/20 229 280 – – – – – – – – 509
2020/21 235 286 79 77 55 60 81 57 57 55 521
2021/22 247 286 81 76 75 53 58 78 58 54 533
2022/23 255 289 68 80 75 74 54 59 76 58 544
2023/24 264 310 73 70 80 79 78 54 62 78 574
2024/25 263 310 66 76 73 83 82 79 53 61 573
2025/26 (preliminary) 284 307 – – – – – – – – 591