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KILTERNAN N S 1

Roll number: 18806U Kilternan, Dublin 18

School details

Address: Kilternan, Dublin 18 (D18CY28)
Email: [email protected]
Phone: 012955682
Principal: Brenda Carson
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: All-Through School
Planning area: Kilternan

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

24.33

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	338	12	28.17	34	4
2007/08	323	12	26.92	34	2
2008/09	325	12	27.08	32	2
2009/10	317	12	26.42	30	2
2010/11	324	12	27.00	31	3
2011/12	321	12	26.75	30	2
2012/13	321	12	26.75	31	2
2013/14	329	12	27.42	32	3
2014/15	321	12	26.75	31	3
2015/16	324	12	27.00	32	4
2016/17	321	12	26.75	32	3
2017/18	325	12	27.08	32	3
2019/20	320	12	26.67	32	3
2020/21	308	12	25.67	30	2
2021/22	306	12	25.50	30	1
2022/23	306	12	25.50	30	1
2023/24	300	12	25.00	29	0
2024/25	298	12	24.83	29	0
2025/26	292	12	24.33	27	0

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 1993/94: 243 in 1983/84 → 299, +56 pupils.
Biggest loss in a single year: 1983/84: 263 in 1982/83 → 243, -20 pupils.
Largest single-class increase: 2nd Class in 2025/26 (28 → 51, +23).
Largest single-class decrease: Junior Infants in 2023/24 (52 → 25, -27).
Largest cohort-step gain: 2nd → 3rd in 2024/25 (41 → 46, +5).
Largest cohort-step loss: 4th → 5th in 2025/26 (51 → 46, -5).
Overall: 264 (1974/75) → 292 (2025/26), 28.

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	25	52	36.5	6
Senior Infants	25	51	37.2	6
1st Class	25	51	36.8	6
2nd Class	28	51	41.3	6
3rd Class	27	50	38.7	6
4th Class	29	51	39.0	6
5th Class	29	50	38.3	6
6th Class	26	49	33.8	6
Total	243	338	296.7	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 42

SI 2021/22 42

-2

1st 2022/23 40

2nd 2023/24 41

3rd 2024/25 46

4th 2025/26 47

Cohort 2021/22

JI 2021/22 30

SI 2022/23 30

-1

1st 2023/24 29

-1

2nd 2024/25 28

-1

3rd 2025/26 27

Cohort 2022/23

JI 2022/23 52

-1

SI 2023/24 51

1st 2024/25 51

2nd 2025/26 51

Cohort 2023/24

JI 2023/24 25

SI 2024/25 26

-1

1st 2025/26 25

Cohort 2024/25

JI 2024/25 25

SI 2025/26 25

Cohort 2025/26

JI 2025/26 45

Raw data by year

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1974/75	119	145	–	–	–	–	–	–	–	–	264
1975/76	–	–	–	–	–	–	–	–	–	–	287
1976/77	130	159	–	–	–	–	–	–	–	–	289
1977/78	136	157	–	–	–	–	–	–	–	–	293
1978/79	–	–	–	–	–	–	–	–	–	–	275
1979/80	141	140	–	–	–	–	–	–	–	–	281
1980/81	129	151	–	–	–	–	–	–	–	–	280
1981/82	124	149	–	–	–	–	–	–	–	–	273
1982/83	121	142	–	–	–	–	–	–	–	–	263
1983/84	110	133	–	–	–	–	–	–	–	–	243
1993/94	143	156	–	–	–	–	–	–	–	–	299
1994/95	139	147	–	–	–	–	–	–	–	–	286
1995/96	131	150	–	–	–	–	–	–	–	–	281
1996/97	127	150	–	–	–	–	–	–	–	–	277
1997/98	117	148	–	–	–	–	–	–	–	–	265
1998/99	114	150	–	–	–	–	–	–	–	–	264
1999/00	121	145	–	–	–	–	–	–	–	–	266
2000/01	123	143	–	–	–	–	–	–	–	–	266
2001/02	130	143	–	–	–	–	–	–	–	–	273
2002/03	125	148	–	–	–	–	–	–	–	–	273
2003/04	144	155	–	–	–	–	–	–	–	–	299
2004/05	155	157	–	–	–	–	–	–	–	–	312
2005/06	149	164	–	–	–	–	–	–	–	–	313
2006/07	162	176	–	–	–	–	–	–	–	–	338
2007/08	154	169	–	–	–	–	–	–	–	–	323
2008/09	159	166	–	–	–	–	–	–	–	–	325
2009/10	150	167	–	–	–	–	–	–	–	–	317
2010/11	152	172	–	–	–	–	–	–	–	–	324
2011/12	151	170	–	–	–	–	–	–	–	–	321
2012/13	147	174	–	–	–	–	–	–	–	–	321
2013/14	150	179	–	–	–	–	–	–	–	–	329
2014/15	147	174	–	–	–	–	–	–	–	–	321
2015/16	145	179	–	–	–	–	–	–	–	–	324
2016/17	140	181	–	–	–	–	–	–	–	–	321
2017/18	148	177	–	–	–	–	–	–	–	–	325
2018/19	144	175	–	–	–	–	–	–	–	–	319
2019/20	136	184	–	–	–	–	–	–	–	–	320
2020/21	139	169	42	49	27	51	30	30	50	29	308
2021/22	142	164	30	42	49	28	50	29	29	49	306
2022/23	146	160	52	30	40	49	29	48	29	29	306
2023/24	147	153	25	51	29	41	50	29	47	28	300
2024/25	151	147	25	26	51	28	46	51	29	42	298
2025/26	145	147	45	25	25	51	27	47	46	26	292