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SN OILIBHEIR

Roll number: 19505L An Chúil Mhín, Cluain Saileach, Baile Átha Cliath 15

School details

Address: An Chúil Mhín, Cluain Saileach, Baile Átha Cliath 15 (D15PX99)
Email: [email protected]
Phone: 018215277
Principal: Antóin Ó Cléirigh / Lára Ní Riain
Ethos: Catholic
DEIS: N
Irish classification: All subjects through Irish
Gaeltacht: N
Island: N
Local authority: Fingal County Council
School patron: Archbishop of Dublin
School type: Ordinary with Special Classes
School level: All-Through School
Planning area: BlanchardstownVge_D15

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

26.00

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	230	8	28.75	31	3
2007/08	233	8	29.12	31	5
2008/09	264	9	29.33	31	5
2009/10	264	9	29.33	31	6
2010/11	267	9	29.67	31	6
2011/12	262	9	29.11	30	4
2012/13	262	9	29.11	30	5
2013/14	259	9	28.78	30	4
2014/15	262	9	29.11	31	5
2015/16	263	9	29.22	31	5
2016/17	236	8	29.50	31	7
2017/18	240	8	30.00	31	7
2019/20	266	9	29.56	31	6
2020/21	266	9	29.56	31	7
2021/22	263	9	29.22	31	5
2022/23	257	9	28.56	31	3
2023/24	262	10	26.20	31	2
2024/25	258	10	25.80	30	2
2025/26	260	10	26.00	30	2

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 1993/94: 225 in 1983/84 → 309, +84 pupils.
Biggest loss in a single year: 1995/96: 311 in 1994/95 → 278, -33 pupils.
Largest single-class increase: 3rd Class in 2023/24 (28 → 53, +25).
Largest single-class decrease: 2nd Class in 2023/24 (54 → 27, -27).
Largest cohort-step gain: 3rd → 4th in 2025/26 (26 → 28, +2).
Largest cohort-step loss: 1st → 2nd in 2023/24 (29 → 27, -2).
Overall: 24 (1975/76) → 266 (2025/26), 242.

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	29	37	30.8	6
Senior Infants	29	55	35.2	6
1st Class	29	54	35.0	6
2nd Class	27	54	33.0	6
3rd Class	26	53	32.2	6
4th Class	28	52	32.8	6
5th Class	27	53	33.5	6
6th Class	27	31	29.8	6
Total	24	311	229.9	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

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 30

SI 2021/22 30

-1

1st 2022/23 29

-2

2nd 2023/24 27

-1

3rd 2024/25 26

4th 2025/26 28

Cohort 2021/22

JI 2021/22 29

SI 2022/23 29

1st 2023/24 29

-2

2nd 2024/25 27

3rd 2025/26 27

Cohort 2022/23

JI 2022/23 30

SI 2023/24 30

-1

1st 2024/25 29

2nd 2025/26 30

Cohort 2023/24

JI 2023/24 37

SI 2024/25 37

1st 2025/26 39

Cohort 2024/25

JI 2024/25 30

SI 2025/26 30

Cohort 2025/26

JI 2025/26 29

Raw data by year

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1975/76	–	–	–	–	–	–	–	–	–	–	24
1976/77	21	18	–	–	–	–	–	–	–	–	39
1977/78	37	36	–	–	–	–	–	–	–	–	73
1978/79	–	–	–	–	–	–	–	–	–	–	104
1979/80	58	77	–	–	–	–	–	–	–	–	135
1980/81	77	83	–	–	–	–	–	–	–	–	160
1981/82	92	98	–	–	–	–	–	–	–	–	190
1982/83	95	109	–	–	–	–	–	–	–	–	204
1983/84	108	117	–	–	–	–	–	–	–	–	225
1993/94	146	163	–	–	–	–	–	–	–	–	309
1994/95	143	168	–	–	–	–	–	–	–	–	311
1995/96	123	155	–	–	–	–	–	–	–	–	278
1996/97	128	155	–	–	–	–	–	–	–	–	283
1997/98	124	149	–	–	–	–	–	–	–	–	273
1998/99	111	152	–	–	–	–	–	–	–	–	263
1999/00	111	149	–	–	–	–	–	–	–	–	260
2000/01	106	131	–	–	–	–	–	–	–	–	237
2001/02	99	130	–	–	–	–	–	–	–	–	229
2002/03	104	125	–	–	–	–	–	–	–	–	229
2003/04	108	121	–	–	–	–	–	–	–	–	229
2004/05	104	123	–	–	–	–	–	–	–	–	227
2005/06	108	125	–	–	–	–	–	–	–	–	233
2006/07	113	117	–	–	–	–	–	–	–	–	230
2007/08	107	126	–	–	–	–	–	–	–	–	233
2008/09	121	143	–	–	–	–	–	–	–	–	264
2009/10	123	141	–	–	–	–	–	–	–	–	264
2010/11	124	143	–	–	–	–	–	–	–	–	267
2011/12	124	138	–	–	–	–	–	–	–	–	262
2012/13	119	143	–	–	–	–	–	–	–	–	262
2013/14	121	138	–	–	–	–	–	–	–	–	259
2014/15	119	143	–	–	–	–	–	–	–	–	262
2015/16	129	134	–	–	–	–	–	–	–	–	263
2016/17	120	116	–	–	–	–	–	–	–	–	236
2017/18	119	121	–	–	–	–	–	–	–	–	240
2018/19	125	118	–	–	–	–	–	–	–	–	243
2019/20	133	133	–	–	–	–	–	–	–	–	266
2020/21	132	134	30	55	30	30	30	31	30	30	266
2021/22	127	136	29	30	54	30	29	30	31	30	263
2022/23	134	128	30	29	29	54	28	28	30	31	262
2023/24	126	142	37	30	29	27	53	28	27	31	268
2024/25	121	143	30	37	29	27	26	52	30	27	264
2025/26	122	144	29	30	39	30	27	28	53	30	266