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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

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
21.20
2025/26
Mainstream classes
5
2025/26
Largest class group
25
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 85 3 28.33 35 2
2007/08 78 4 19.50 25 0
2008/09 79 4 19.75 32 1
2009/10 90 3 30.00 36 2
2010/11 89 4 22.25 24 0
2011/12 94 4 23.50 25 0
2012/13 110 4 27.50 32 2
2013/14 121 4 30.25 36 2
2014/15 125 5 25.00 28 0
2015/16 121 5 24.20 28 0
2016/17 120 5 24.00 29 0
2017/18 119 5 23.80 29 0
2019/20 132 5 26.40 32 1
2020/21 125 5 25.00 30 1
2021/22 122 5 24.40 29 0
2022/23 120 5 24.00 29 0
2023/24 125 5 25.00 30 1
2024/25 113 5 22.60 26 0
2025/26 106 5 21.20 25 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 0 0 0.0 1
1st Class 0 0 0.0 1
2nd Class 17 25 21.7 6
3rd Class 20 30 23.8 6
4th Class 20 29 24.5 6
5th Class 21 29 25.2 6
6th Class 21 30 23.3 6
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

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 – 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 – 106 – – – 17 20 25 23 21 106