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SCOIL NAISUNTA CHNUACHA

Roll number: 18623M Main Street, Castleknock, Dublin 15

School details

Address: Main Street, Castleknock, Dublin 15 (D15PV38)
Email: [email protected]
Phone: 018202611
Principal: Sandra Moloney
Ethos: Church Of Ireland
DEIS: N
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: Fingal County Council
School patron: Archbishop of Dublin & Bishop of Glendalough COI
School type: Ordinary
School level: All-Through School
Planning area: Castleknock_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

24.75

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	180	7	25.71	29	0
2007/08	181	7	25.86	30	1
2008/09	183	7	26.14	31	1
2009/10	185	7	26.43	34	2
2010/11	184	7	26.29	32	1
2011/12	213	8	26.62	31	1
2012/13	214	8	26.75	30	1
2013/14	217	8	27.12	30	1
2014/15	208	8	26.00	30	1
2015/16	207	8	25.88	30	1
2016/17	214	8	26.75	32	1
2017/18	214	8	26.75	32	1
2019/20	212	8	26.50	30	1
2020/21	211	9	23.44	28	0
2021/22	207	8	25.88	29	0
2022/23	209	8	26.12	30	1
2023/24	201	8	25.12	27	0
2024/25	199	8	24.88	28	0
2025/26	198	8	24.75	29	0

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 2011/12: 184 in 2010/11 → 213, +29 pupils.
Biggest loss in a single year: 2014/15: 217 in 2013/14 → 208, -9 pupils.
Largest single-class increase: 2nd Class in 2025/26 (23 → 29, +6).
Largest single-class decrease: Senior Infants in 2025/26 (25 → 18, -7).
Largest cohort-step gain: 1st → 2nd in 2025/26 (26 → 29, +3).
Largest cohort-step loss: SI → 1st in 2023/24 (25 → 22, -3).
Overall: 88 (1974/75) → 198 (2025/26), 110.

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	18	26	22.2	6
Senior Infants	18	28	24.8	6
1st Class	22	28	24.8	6
2nd Class	23	29	25.7	6
3rd Class	25	27	26.2	6
4th Class	25	29	27.0	6
5th Class	24	29	27.0	6
6th Class	24	30	26.5	6
Total	88	217	167.3	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 26

SI 2021/22 27

-1

1st 2022/23 26

2nd 2023/24 27

3rd 2024/25 27

4th 2025/26 28

Cohort 2021/22

JI 2021/22 23

SI 2022/23 25

-3

1st 2023/24 22

2nd 2024/25 23

3rd 2025/26 25

Cohort 2022/23

JI 2022/23 25

SI 2023/24 26

1st 2024/25 26

2nd 2025/26 29

Cohort 2023/24

JI 2023/24 22

SI 2024/25 25

1st 2025/26 28

Cohort 2024/25

JI 2024/25 19

-1

SI 2025/26 18

Cohort 2025/26

JI 2025/26 18

Raw data by year

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1974/75	45	43	–	–	–	–	–	–	–	–	88
1975/76	–	–	–	–	–	–	–	–	–	–	94
1976/77	47	51	–	–	–	–	–	–	–	–	98
1977/78	46	55	–	–	–	–	–	–	–	–	101
1978/79	–	–	–	–	–	–	–	–	–	–	120
1979/80	56	78	–	–	–	–	–	–	–	–	134
1980/81	58	76	–	–	–	–	–	–	–	–	134
1981/82	60	72	–	–	–	–	–	–	–	–	132
1982/83	67	78	–	–	–	–	–	–	–	–	145
1983/84	59	78	–	–	–	–	–	–	–	–	137
1993/94	68	86	–	–	–	–	–	–	–	–	154
1994/95	70	81	–	–	–	–	–	–	–	–	151
1995/96	68	75	–	–	–	–	–	–	–	–	143
1996/97	60	79	–	–	–	–	–	–	–	–	139
1997/98	56	78	–	–	–	–	–	–	–	–	134
1998/99	61	74	–	–	–	–	–	–	–	–	135
1999/00	61	83	–	–	–	–	–	–	–	–	144
2000/01	69	81	–	–	–	–	–	–	–	–	150
2001/02	69	84	–	–	–	–	–	–	–	–	153
2002/03	65	91	–	–	–	–	–	–	–	–	156
2003/04	73	89	–	–	–	–	–	–	–	–	162
2004/05	72	95	–	–	–	–	–	–	–	–	167
2005/06	76	100	–	–	–	–	–	–	–	–	176
2006/07	76	104	–	–	–	–	–	–	–	–	180
2007/08	80	101	–	–	–	–	–	–	–	–	181
2008/09	85	98	–	–	–	–	–	–	–	–	183
2009/10	94	91	–	–	–	–	–	–	–	–	185
2010/11	89	95	–	–	–	–	–	–	–	–	184
2011/12	100	113	–	–	–	–	–	–	–	–	213
2012/13	103	111	–	–	–	–	–	–	–	–	214
2013/14	107	110	–	–	–	–	–	–	–	–	217
2014/15	107	101	–	–	–	–	–	–	–	–	208
2015/16	109	98	–	–	–	–	–	–	–	–	207
2016/17	102	112	–	–	–	–	–	–	–	–	214
2017/18	98	116	–	–	–	–	–	–	–	–	214
2018/19	103	107	–	–	–	–	–	–	–	–	210
2019/20	105	107	–	–	–	–	–	–	–	–	212
2020/21	103	108	26	28	22	26	27	29	27	26	211
2021/22	95	112	23	27	25	25	26	27	29	25	207
2022/23	101	108	25	25	26	24	26	26	27	30	209
2023/24	96	105	22	26	22	27	26	25	27	26	201
2024/25	94	105	19	25	26	23	27	27	24	28	199
2025/26	97	101	18	18	28	29	25	28	28	24	198