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DALKEY N S (2)

Roll number: 14647G Harbour Road, Dalkey, Co. Dublin

School details

Address: Harbour Road, Dalkey, Co. Dublin (A96RR04)
Email: [email protected]
Phone: 012803647
Principal: Jennifer Kirwan
Ethos: Church Of Ireland
DEIS: N
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: Dun Laoghaire Rathdown
School patron: Archbishop of Dublin & Bishop of Glendalough COI
School type: Ordinary
School level: All-Through School
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

25.25

2025/26

Mainstream classes

2025/26

Largest class group

2025/26

Classes with 30+ pupils

2025/26

Class group metrics trend

Class group metrics by year

Year	Mainstream class pupils	Mainstream classes	Average class size	Largest class
2006/07	95	4	23.75	27
2007/08	98	4	24.50	26
2008/09	93	4	23.25	26
2009/10	94	4	23.50	27
2010/11	95	4	23.75	29
2011/12	97	4	24.25	28
2012/13	102	4	25.50	28
2013/14	99	4	24.75	27
2014/15	101	4	25.25	28
2015/16	100	4	25.00	27
2016/17	97	4	24.25	28
2017/18	99	4	24.75	27
2019/20	99	4	24.75	26
2020/21	105	4	26.25	28
2021/22	96	4	24.00	28
2022/23	100	4	25.00	28
2023/24	102	4	25.50	28
2024/25	101	4	25.25	27
2025/26	101	4	25.25	27

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 1976/77: 138 in 1975/76 → 178, +40 pupils.
Biggest loss in a single year: 1975/76: 185 in 1974/75 → 138, -47 pupils.
Largest single-class increase: 3rd Class in 2022/23 (9 → 14, +5).
Largest single-class decrease: 3rd Class in 2021/22 (14 → 9, -5).
Largest cohort-step gain: 3rd → 4th in 2024/25 (12 → 14, +2).
Largest cohort-step loss: 3rd → 4th in 2021/22 (14 → 10, -4).
Overall: 185 (1974/75) → 101 (2025/26), -84.

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	13	14	13.7	6
Senior Infants	11	14	13.2	6
1st Class	13	15	13.8	6
2nd Class	12	15	13.2	6
3rd Class	9	14	12.3	6
4th Class	10	15	12.0	6
5th Class	9	14	11.2	6
6th Class	9	13	11.5	6
Total	88	185	107.3	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

Base cohort:

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 14

SI 2021/22 14

1st 2022/23 14

2nd 2023/24 14

-1

3rd 2024/25 13

-1

4th 2025/26 12

Cohort 2021/22

JI 2021/22 13

SI 2022/23 14

1st 2023/24 14

-1

2nd 2024/25 13

-1

3rd 2025/26 12

Cohort 2022/23

JI 2022/23 14

SI 2023/24 14

-1

1st 2024/25 13

2nd 2025/26 13

Cohort 2023/24

JI 2023/24 14

-1

SI 2024/25 13

1st 2025/26 14

Cohort 2024/25

JI 2024/25 13

-2

SI 2025/26 11

Cohort 2025/26

JI 2025/26 14

Raw data by year

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1974/75	92	93	–	–	–	–	–	–	–	–	185
1975/76	–	–	–	–	–	–	–	–	–	–	138
1976/77	77	101	–	–	–	–	–	–	–	–	178
1977/78	65	102	–	–	–	–	–	–	–	–	167
1978/79	–	–	–	–	–	–	–	–	–	–	130
1979/80	52	61	–	–	–	–	–	–	–	–	113
1980/81	58	51	–	–	–	–	–	–	–	–	109
1981/82	57	46	–	–	–	–	–	–	–	–	103
1982/83	58	54	–	–	–	–	–	–	–	–	112
1983/84	50	57	–	–	–	–	–	–	–	–	107
1993/94	47	64	–	–	–	–	–	–	–	–	111
1994/95	50	60	–	–	–	–	–	–	–	–	110
1995/96	44	67	–	–	–	–	–	–	–	–	111
1996/97	45	65	–	–	–	–	–	–	–	–	110
1997/98	46	54	–	–	–	–	–	–	–	–	100
1998/99	43	48	–	–	–	–	–	–	–	–	91
1999/00	42	54	–	–	–	–	–	–	–	–	96
2000/01	39	49	–	–	–	–	–	–	–	–	88
2001/02	40	55	–	–	–	–	–	–	–	–	95
2002/03	39	50	–	–	–	–	–	–	–	–	89
2003/04	47	50	–	–	–	–	–	–	–	–	97
2004/05	40	58	–	–	–	–	–	–	–	–	98
2005/06	40	57	–	–	–	–	–	–	–	–	97
2006/07	36	59	–	–	–	–	–	–	–	–	95
2007/08	40	58	–	–	–	–	–	–	–	–	98
2008/09	39	54	–	–	–	–	–	–	–	–	93
2009/10	44	50	–	–	–	–	–	–	–	–	94
2010/11	46	49	–	–	–	–	–	–	–	–	95
2011/12	47	50	–	–	–	–	–	–	–	–	97
2012/13	55	47	–	–	–	–	–	–	–	–	102
2013/14	50	49	–	–	–	–	–	–	–	–	99
2014/15	55	46	–	–	–	–	–	–	–	–	101
2015/16	51	49	–	–	–	–	–	–	–	–	100
2016/17	52	45	–	–	–	–	–	–	–	–	97
2017/18	58	41	–	–	–	–	–	–	–	–	99
2018/19	58	47	–	–	–	–	–	–	–	–	105
2019/20	52	47	–	–	–	–	–	–	–	–	99
2020/21	53	52	14	13	15	12	14	15	9	13	105
2021/22	48	48	13	14	13	15	9	10	13	9	96
2022/23	45	55	14	14	14	12	14	10	9	13	100
2023/24	47	55	14	14	14	14	12	11	12	11	102
2024/25	46	55	13	13	13	13	13	14	10	12	101
2025/26	41	60	14	11	14	13	12	12	14	11	101