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SCOIL IOSAGAIN BOYS SENIOR

Roll number: 17603B Aughavannagh Road, Crumlin, Dublin 12

School details

Address: Aughavannagh Road, Crumlin, Dublin 12 (D12W522)
Email: [email protected]
Phone: 014541821
Principal: Aoife Wrynne
Ethos: Catholic
DEIS: Y
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: Dublin City Council
School patron: Archbishop of Dublin
School type: Ordinary with Special Classes
School level: Senior
Planning area: Dolphin's Barn_D12

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: 2017/18: 80 in 2016/17 → 95, +15 pupils.
Biggest loss in a single year: 1993/94: 358 in 1982/83 → 230, -128 pupils.
Largest single-class increase: 6th Class in 2021/22 (7 → 24, +17).
Largest single-class decrease: 4th Class in 2021/22 (16 → 3, -13).
Largest cohort-step gain: 3rd → 4th in 2022/23 (18 → 20, +2).
Largest cohort-step loss: 4th → 5th in 2021/22 (16 → 12, -4).
Overall: 590 (1974/75) → 83 (2025/26 (preliminary)), -507.

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	6	20	13.2	5
3rd Class	3	18	12.6	5
4th Class	3	20	13.8	5
5th Class	3	23	15.2	5
6th Class	3	24	13.2	5
Total	68	590	184.6	42

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	–	590	–	–	–	–	–	–	–	–	590
1975/76	–	–	–	–	–	–	–	–	–	–	522
1976/77	–	472	–	–	–	–	–	–	–	–	472
1977/78	–	476	–	–	–	–	–	–	–	–	476
1978/79	–	433	–	–	–	–	–	–	–	–	433
1979/80	–	420	–	–	–	–	–	–	–	–	420
1980/81	–	400	–	–	–	–	–	–	–	–	400
1981/82	–	388	–	–	–	–	–	–	–	–	388
1982/83	–	358	–	–	–	–	–	–	–	–	358
1993/94	–	230	–	–	–	–	–	–	–	–	230
1994/95	–	203	–	–	–	–	–	–	–	–	203
1995/96	–	189	–	–	–	–	–	–	–	–	189
1996/97	–	165	–	–	–	–	–	–	–	–	165
1997/98	–	134	–	–	–	–	–	–	–	–	134
1998/99	–	111	–	–	–	–	–	–	–	–	111
1999/00	–	109	–	–	–	–	–	–	–	–	109
2000/01	–	102	–	–	–	–	–	–	–	–	102
2001/02	–	97	–	–	–	–	–	–	–	–	97
2002/03	–	110	–	–	–	–	–	–	–	–	110
2003/04	–	113	–	–	–	–	–	–	–	–	113
2004/05	–	117	–	–	–	–	–	–	–	–	117
2005/06	–	122	–	–	–	–	–	–	–	–	122
2006/07	–	127	–	–	–	–	–	–	–	–	127
2007/08	–	121	–	–	–	–	–	–	–	–	121
2008/09	–	117	–	–	–	–	–	–	–	–	117
2009/10	–	116	–	–	–	–	–	–	–	–	116
2010/11	–	106	–	–	–	–	–	–	–	–	106
2011/12	–	112	–	–	–	–	–	–	–	–	112
2012/13	–	105	–	–	–	–	–	–	–	–	105
2013/14	–	101	–	–	–	–	–	–	–	–	101
2014/15	–	86	–	–	–	–	–	–	–	–	86
2015/16	–	92	–	–	–	–	–	–	–	–	92
2016/17	–	80	–	–	–	–	–	–	–	–	80
2017/18	–	95	–	–	–	–	–	–	–	–	95
2018/19	–	86	–	–	–	–	–	–	–	–	86
2019/20	–	68	–	–	–	–	–	–	–	–	68
2020/21	–	81	–	–	–	20	3	16	23	7	81
2021/22	–	85	–	–	–	16	18	3	12	24	85
2022/23	–	74	–	–	–	10	17	20	3	12	74
2023/24	–	77	–	–	–	14	10	18	20	3	77
2024/25	–	81	–	–	–	6	15	12	18	20	81
2025/26 (preliminary)	1	82	–	–	–	–	–	–	–	–	83