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ST CONLETHS N S

Roll number: 18449W Derrinturn, Carbury, Co. Kildare

School details

Address: Derrinturn, Carbury, Co. Kildare (W91KC79)
Email: [email protected]
Phone: 0469553490
Principal: Fionnuala Bruton
Ethos: Catholic
DEIS: Y
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: Kildare County Council
School patron: Bishop of Kildare & Leighlin
School type: Ordinary with Special Classes
School level: All-Through School
Planning area: Edenderry

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

22.25

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	Classes 30+
2006/07	244	10	24.40	29	0
2007/08	243	10	24.30	31	2
2008/09	270	11	24.55	29	0
2009/10	278	11	25.27	37	2
2010/11	283	11	25.73	36	2
2011/12	292	12	24.33	28	0
2012/13	320	12	26.67	37	3
2013/14	299	12	24.92	31	2
2014/15	307	11	27.91	37	3
2015/16	310	12	25.83	32	2
2016/17	303	12	25.25	36	2
2017/18	291	12	24.25	34	2
2019/20	296	12	24.67	33	2
2020/21	314	13	24.15	30	1
2021/22	319	13	24.54	28	0
2022/23	305	13	23.46	28	0
2023/24	268	13	20.62	27	0
2024/25	279	12	23.25	28	0
2025/26	267	12	22.25	29	0

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 1975/76: 168 in 1974/75 → 208, +40 pupils.
Biggest loss in a single year: 1993/94: 272 in 1983/84 → 214, -58 pupils.
Largest single-class increase: 5th Class in 2021/22 (40 → 57, +17).
Largest single-class decrease: 5th Class in 2022/23 (57 → 39, -18).
Largest cohort-step gain: 5th → 6th in 2025/26 (39 → 43, +4).
Largest cohort-step loss: JI → SI in 2025/26 (40 → 36, -4).
Overall: 168 (1974/75) → 278 (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	23	40	31.7	6
Senior Infants	24	39	32.0	6
1st Class	23	39	32.8	6
2nd Class	29	40	35.8	6
3rd Class	31	42	38.2	6
4th Class	32	56	39.8	6
5th Class	34	57	41.0	6
6th Class	39	55	43.3	6
Total	168	329	256.8	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 29

1st 2022/23 30

2nd 2023/24 30

3rd 2024/25 31

4th 2025/26 32

Cohort 2021/22

JI 2021/22 37

SI 2022/23 39

1st 2023/24 39

2nd 2024/25 40

3rd 2025/26 42

Cohort 2022/23

JI 2022/23 25

SI 2023/24 27

1st 2024/25 29

2nd 2025/26 29

Cohort 2023/24

JI 2023/24 23

SI 2024/25 24

-1

1st 2025/26 23

Cohort 2024/25

JI 2024/25 40

-4

SI 2025/26 36

Cohort 2025/26

JI 2025/26 39

Raw data by year

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1974/75	77	91	–	–	–	–	–	–	–	–	168
1975/76	–	–	–	–	–	–	–	–	–	–	208
1976/77	110	134	–	–	–	–	–	–	–	–	244
1977/78	112	123	–	–	–	–	–	–	–	–	235
1978/79	120	132	–	–	–	–	–	–	–	–	252
1979/80	124	136	–	–	–	–	–	–	–	–	260
1980/81	138	134	–	–	–	–	–	–	–	–	272
1981/82	144	136	–	–	–	–	–	–	–	–	280
1982/83	139	137	–	–	–	–	–	–	–	–	276
1983/84	137	135	–	–	–	–	–	–	–	–	272
1993/94	106	108	–	–	–	–	–	–	–	–	214
1994/95	103	103	–	–	–	–	–	–	–	–	206
1995/96	99	99	–	–	–	–	–	–	–	–	198
1996/97	98	94	–	–	–	–	–	–	–	–	192
1997/98	93	107	–	–	–	–	–	–	–	–	200
1998/99	93	110	–	–	–	–	–	–	–	–	203
1999/00	87	100	–	–	–	–	–	–	–	–	187
2000/01	88	101	–	–	–	–	–	–	–	–	189
2001/02	89	93	–	–	–	–	–	–	–	–	182
2002/03	100	100	–	–	–	–	–	–	–	–	200
2003/04	104	101	–	–	–	–	–	–	–	–	205
2004/05	103	110	–	–	–	–	–	–	–	–	213
2005/06	120	119	–	–	–	–	–	–	–	–	239
2006/07	121	123	–	–	–	–	–	–	–	–	244
2007/08	119	129	–	–	–	–	–	–	–	–	248
2008/09	139	137	–	–	–	–	–	–	–	–	276
2009/10	144	139	–	–	–	–	–	–	–	–	283
2010/11	149	139	–	–	–	–	–	–	–	–	288
2011/12	145	153	–	–	–	–	–	–	–	–	298
2012/13	158	168	–	–	–	–	–	–	–	–	326
2013/14	161	143	–	–	–	–	–	–	–	–	304
2014/15	167	148	–	–	–	–	–	–	–	–	315
2015/16	169	152	–	–	–	–	–	–	–	–	321
2016/17	164	149	–	–	–	–	–	–	–	–	313
2017/18	156	146	–	–	–	–	–	–	–	–	302
2018/19	158	147	–	–	–	–	–	–	–	–	305
2019/20	162	144	–	–	–	–	–	–	–	–	306
2020/21	173	151	26	37	39	37	39	56	40	41	324
2021/22	166	163	37	29	37	40	39	39	57	42	329
2022/23	153	164	25	39	30	39	42	38	39	55	317
2023/24	137	143	23	27	39	30	36	38	37	39	280
2024/25	138	152	40	24	29	40	31	36	39	40	290
2025/26	135	143	39	36	23	29	42	32	34	43	278