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HAROLD BOYS N S

Roll number: 15132B St. Patrick's Road, Dalkey, Co. Dublin

School details

Address: St. Patrick's Road, Dalkey, Co. Dublin (A96PY94)
Email: [email protected]
Phone: 012856193
Principal: Teresa Buckley
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: Senior
Planning area: Dunlaoghaire

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.

Biggest gain in a single year: 2012/13: 94 in 2011/12 → 110, +16 pupils.
Biggest loss in a single year: 1976/77: 212 in 1975/76 → 191, -21 pupils.
Largest single-class increase: 6th Class in 2023/24 (22 → 30, +8).
Largest single-class decrease: 3rd Class in 2021/22 (30 → 20, -10).
Largest cohort-step gain: 4th → 5th in 2023/24 (20 → 21, +1).
Largest cohort-step loss: 5th → 6th in 2022/23 (25 → 22, -3).
Overall: 209 (1974/75) → 106 (2025/26 (preliminary)), -103.

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
2nd Class	19	25	22.6	5
3rd Class	20	30	24.6	5
4th Class	20	29	24.4	5
5th Class	21	29	25.6	5
6th Class	21	30	23.8	5
Total	75	212	116.4	43

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

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	–	209	–	–	–	–	–	–	–	–	209
1975/76	–	–	–	–	–	–	–	–	–	–	212
1976/77	–	191	–	–	–	–	–	–	–	–	191
1977/78	–	176	–	–	–	–	–	–	–	–	176
1978/79	–	–	–	–	–	–	–	–	–	–	164
1979/80	–	147	–	–	–	–	–	–	–	–	147
1980/81	–	145	–	–	–	–	–	–	–	–	145
1981/82	–	147	–	–	–	–	–	–	–	–	147
1982/83	–	128	–	–	–	–	–	–	–	–	128
1983/84	–	107	–	–	–	–	–	–	–	–	107
1993/94	–	96	–	–	–	–	–	–	–	–	96
1994/95	6	94	–	–	–	–	–	–	–	–	100
1995/96	6	92	–	–	–	–	–	–	–	–	98
1996/97	–	96	–	–	–	–	–	–	–	–	96
1997/98	–	94	–	–	–	–	–	–	–	–	94
1998/99	–	92	–	–	–	–	–	–	–	–	92
1999/00	–	92	–	–	–	–	–	–	–	–	92
2000/01	–	91	–	–	–	–	–	–	–	–	91
2001/02	–	92	–	–	–	–	–	–	–	–	92
2002/03	–	91	–	–	–	–	–	–	–	–	91
2003/04	–	88	–	–	–	–	–	–	–	–	88
2004/05	–	75	–	–	–	–	–	–	–	–	75
2005/06	–	79	–	–	–	–	–	–	–	–	79
2006/07	–	85	–	–	–	–	–	–	–	–	85
2007/08	–	78	–	–	–	–	–	–	–	–	78
2008/09	–	79	–	–	–	–	–	–	–	–	79
2009/10	–	90	–	–	–	–	–	–	–	–	90
2010/11	–	89	–	–	–	–	–	–	–	–	89
2011/12	–	94	–	–	–	–	–	–	–	–	94
2012/13	–	110	–	–	–	–	–	–	–	–	110
2013/14	–	121	–	–	–	–	–	–	–	–	121
2014/15	–	125	–	–	–	–	–	–	–	–	125
2015/16	–	121	–	–	–	–	–	–	–	–	121
2016/17	–	120	–	–	–	–	–	–	–	–	120
2017/18	–	119	–	–	–	–	–	–	–	–	119
2018/19	–	122	–	–	–	–	–	–	–	–	122
2019/20	–	132	–	–	–	–	–	–	–	–	132
2020/21	–	125	–	–	–	21	30	25	27	22	125
2021/22	–	122	–	–	–	24	20	29	25	24	122
2022/23	–	120	–	–	–	24	25	20	29	22	120
2023/24	–	125	–	–	–	25	23	26	21	30	125
2024/25	–	113	–	–	–	19	25	22	26	21	113
2025/26 (preliminary)	–	106	–	–	–	–	–	–	–	–	106