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CLOCHAR SAN DOMINIC

Roll number: 05600C Convent Road, Dun Laoghaire, Co. Dublin

School details

Address: Convent Road, Dun Laoghaire, Co. Dublin (A96V2P2)
Email: [email protected]
Phone: 012809011
Principal: Peter Mooney
Ethos: Catholic
DEIS: Y
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: Dun Laoghaire Rathdown
School patron: Archbishop of Dublin
School type: Ordinary with Special Classes
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

17.20

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	Classes 30+
2006/07	185	9	20.56	27	0
2007/08	185	9	20.56	27	0
2008/09	200	9	22.22	26	0
2009/10	180	10	18.00	26	0
2010/11	167	8	20.88	25	0
2011/12	150	8	18.75	24	0
2012/13	150	8	18.75	26	0
2013/14	160	8	20.00	27	0
2014/15	190	9	21.11	28	0
2015/16	197	9	21.89	29	0
2016/17	202	9	22.44	31	1
2017/18	212	9	23.56	34	2
2019/20	222	10	22.20	29	0
2020/21	206	10	20.60	32	1
2021/22	180	10	18.00	24	0
2022/23	187	9	20.78	25	0
2023/24	165	10	16.50	27	0
2024/25	182	9	20.22	36	1
2025/26	172	10	17.20	21	0

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 1975/76: 410 in 1974/75 → 473, +63 pupils.
Biggest loss in a single year: 1993/94: 366 in 1983/84 → 169, -197 pupils.
Largest single-class increase: 4th Class in 2024/25 (14 → 31, +17).
Largest single-class decrease: 6th Class in 2025/26 (36 → 18, -18).
Largest cohort-step gain: 5th → 6th in 2024/25 (27 → 36, +9).
Largest cohort-step loss: 3rd → 4th in 2023/24 (20 → 14, -6).
Overall: 410 (1974/75) → 184 (2025/26), -226.

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	15	22	18.2	6
Senior Infants	17	24	21.5	6
1st Class	18	24	21.0	6
2nd Class	15	32	23.2	6
3rd Class	15	33	22.8	6
4th Class	14	31	23.7	6
5th Class	22	37	27.3	6
6th Class	18	36	26.8	6
Total	150	476	246.1	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 20

-2

SI 2021/22 18

1st 2022/23 18

-3

2nd 2023/24 15

3rd 2024/25 15

4th 2025/26 20

Cohort 2021/22

JI 2021/22 16

SI 2022/23 23

-2

1st 2023/24 21

2nd 2024/25 22

-1

3rd 2025/26 21

Cohort 2022/23

JI 2022/23 22

SI 2023/24 24

1st 2024/25 24

2nd 2025/26 27

Cohort 2023/24

JI 2023/24 19

-2

SI 2024/25 17

1st 2025/26 21

Cohort 2024/25

JI 2024/25 15

SI 2025/26 23

Cohort 2025/26

JI 2025/26 17

Raw data by year

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1974/75	302	108	–	–	–	–	–	–	–	–	410
1975/76	–	–	–	–	–	–	–	–	–	–	473
1976/77	356	120	–	–	–	–	–	–	–	–	476
1977/78	339	124	–	–	–	–	–	–	–	–	463
1978/79	–	–	–	–	–	–	–	–	–	–	455
1979/80	358	111	–	–	–	–	–	–	–	–	469
1980/81	360	98	–	–	–	–	–	–	–	–	458
1981/82	338	90	–	–	–	–	–	–	–	–	428
1982/83	309	81	–	–	–	–	–	–	–	–	390
1983/84	295	71	–	–	–	–	–	–	–	–	366
1993/94	135	34	–	–	–	–	–	–	–	–	169
1994/95	132	39	–	–	–	–	–	–	–	–	171
1995/96	114	51	–	–	–	–	–	–	–	–	165
1996/97	106	55	–	–	–	–	–	–	–	–	161
1997/98	100	69	–	–	–	–	–	–	–	–	169
1998/99	107	74	–	–	–	–	–	–	–	–	181
1999/00	111	86	–	–	–	–	–	–	–	–	197
2000/01	112	91	–	–	–	–	–	–	–	–	203
2001/02	102	101	–	–	–	–	–	–	–	–	203
2002/03	94	109	–	–	–	–	–	–	–	–	203
2003/04	98	107	–	–	–	–	–	–	–	–	205
2004/05	99	103	–	–	–	–	–	–	–	–	202
2005/06	98	100	–	–	–	–	–	–	–	–	198
2006/07	95	97	–	–	–	–	–	–	–	–	192
2007/08	97	95	–	–	–	–	–	–	–	–	192
2008/09	103	102	–	–	–	–	–	–	–	–	205
2009/10	91	89	–	–	–	–	–	–	–	–	180
2010/11	90	77	–	–	–	–	–	–	–	–	167
2011/12	73	77	–	–	–	–	–	–	–	–	150
2012/13	75	75	–	–	–	–	–	–	–	–	150
2013/14	76	84	–	–	–	–	–	–	–	–	160
2014/15	94	96	–	–	–	–	–	–	–	–	190
2015/16	97	100	–	–	–	–	–	–	–	–	197
2016/17	95	107	–	–	–	–	–	–	–	–	202
2017/18	102	110	–	–	–	–	–	–	–	–	212
2018/19	116	98	–	–	–	–	–	–	–	–	214
2019/20	122	100	–	–	–	–	–	–	–	–	222
2020/21	106	100	20	24	21	32	24	24	30	31	206
2021/22	89	97	16	18	21	18	33	22	24	28	186
2022/23	100	93	22	23	18	25	20	31	24	25	193
2023/24	87	84	19	24	21	15	24	14	27	23	171
2024/25	103	91	15	17	24	22	15	31	22	36	194
2025/26	92	92	17	23	21	27	21	20	37	18	184