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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

Class size history

Mainstream class group data is shown separately from standard/year-group enrolment data. The source does not identify which standard/year group each class group belongs to.

Average class size
18.00
2025/26
Mainstream classes
4
2025/26
Largest class group
23
2025/26
Classes with 30+ pupils
0
2025/26

Class group metrics trend

Class group metrics by year

Year Mainstream class pupils Mainstream classes Average class size Largest class Classes 30+
2006/07 127 6 21.17 26 0
2007/08 121 6 20.17 25 0
2008/09 117 6 19.50 26 0
2009/10 116 6 19.33 23 0
2010/11 106 6 17.67 22 0
2011/12 112 5 22.40 24 0
2012/13 105 5 21.00 26 0
2013/14 101 4 25.25 31 1
2014/15 86 4 21.50 22 0
2015/16 92 4 23.00 27 0
2016/17 80 5 16.00 22 0
2017/18 95 4 23.75 28 0
2019/20 66 4 16.50 18 0
2020/21 69 4 17.25 20 0
2021/22 73 4 18.25 24 0
2022/23 62 4 15.50 20 0
2023/24 65 4 16.25 23 0
2024/25 70 4 17.50 21 0
2025/26 72 4 18.00 23 0

Data highlights

Key numbers to spot outliers or notable changes.

Summary statistics (class-level data)

Min / max / mean enrolment per class across the available final by-standard years.

Class Min Max Mean Years
Junior Infants 0 0 0.0 1
Senior Infants 2 2 2.0 1
1st Class 2 2 2.0 1
2nd Class 6 20 13.8 6
3rd Class 3 18 11.8 6
4th Class 3 20 14.3 6
5th Class 3 23 15.3 6
6th Class 3 24 14.5 6
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

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 2025/26
JI 2025/26 0

Raw data by year

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 1 82 – 2 2 17 8 17 16 21 83