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Scoil na Mainistreach

Roll number: 18551N Oldtown Road, Celbridge, Co. Kildare

School details

Address: Oldtown Road, Celbridge, Co. Kildare (W23VR98)
Email: [email protected]
Phone: 016271149
Principal: Matthew Heffernan
Ethos: Catholic
DEIS: N
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: Kildare County Council
School patron: Archbishop of Dublin
School type: Ordinary with Special Classes
School level: All-Through School
Planning area: Celbridge

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

23.32

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	629	23	27.35	32	5
2007/08	656	24	27.33	30	3
2008/09	653	24	27.21	30	1
2009/10	656	24	27.33	29	0
2010/11	637	24	26.54	30	2
2011/12	640	24	26.67	29	0
2012/13	626	23	27.22	32	2
2013/14	601	23	26.13	31	1
2014/15	573	22	26.05	33	2
2015/16	535	21	25.48	32	2
2016/17	507	20	25.35	33	2
2017/18	475	19	25.00	33	2
2019/20	408	18	22.67	30	1
2020/21	389	16	24.31	31	2
2021/22	383	16	23.94	29	0
2022/23	426	17	25.06	29	0
2023/24	436	18	24.22	28	0
2024/25	448	18	24.89	28	0
2025/26	443	19	23.32	28	0

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 1979/80: 251 in 1978/79 → 374, +123 pupils.
Biggest loss in a single year: 2019/20: 473 in 2018/19 → 420, -53 pupils.
Largest single-class increase: Junior Infants in 2022/23 (56 → 78, +22).
Largest single-class decrease: Junior Infants in 2023/24 (78 → 59, -19).
Largest cohort-step gain: 5th → 6th in 2022/23 (43 → 51, +8).
Largest cohort-step loss: SI → 1st in 2024/25 (77 → 74, -3).
Overall: 156 (1974/75) → 455 (2025/26), 299.

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	50	78	59.2	6
Senior Infants	39	77	57.3	6
1st Class	41	74	55.3	6
2nd Class	40	71	53.0	6
3rd Class	45	58	50.3	6
4th Class	45	57	49.3	6
5th Class	43	55	50.7	6
6th Class	47	61	53.3	6
Total	156	669	500.8	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 61

-2

SI 2021/22 59

1st 2022/23 61

-2

2nd 2023/24 59

-1

3rd 2024/25 58

-1

4th 2025/26 57

Cohort 2021/22

JI 2021/22 56

SI 2022/23 58

-1

1st 2023/24 57

2nd 2024/25 58

3rd 2025/26 58

Cohort 2022/23

JI 2022/23 78

-1

SI 2023/24 77

-3

1st 2024/25 74

-3

2nd 2025/26 71

Cohort 2023/24

JI 2023/24 59

SI 2024/25 60

-2

1st 2025/26 58

Cohort 2024/25

JI 2024/25 50

SI 2025/26 51

Cohort 2025/26

JI 2025/26 51

Raw data by year

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1974/75	–	156	–	–	–	–	–	–	–	–	156
1975/76	–	–	–	–	–	–	–	–	–	–	189
1976/77	–	202	–	–	–	–	–	–	–	–	202
1977/78	–	219	–	–	–	–	–	–	–	–	219
1978/79	–	251	–	–	–	–	–	–	–	–	251
1979/80	–	374	–	–	–	–	–	–	–	–	374
1980/81	–	417	–	–	–	–	–	–	–	–	417
1981/82	–	454	–	–	–	–	–	–	–	–	454
1982/83	–	466	–	–	–	–	–	–	–	–	466
1983/84	–	494	–	–	–	–	–	–	–	–	494
1993/94	–	549	–	–	–	–	–	–	–	–	549
1994/95	–	561	–	–	–	–	–	–	–	–	561
1995/96	–	594	–	–	–	–	–	–	–	–	594
1996/97	–	592	–	–	–	–	–	–	–	–	592
1997/98	–	590	–	–	–	–	–	–	–	–	590
1998/99	–	572	–	–	–	–	–	–	–	–	572
1999/00	–	579	–	–	–	–	–	–	–	–	579
2000/01	–	577	–	–	–	–	–	–	–	–	577
2001/02	–	576	–	–	–	–	–	–	–	–	576
2002/03	–	583	–	–	–	–	–	–	–	–	583
2003/04	–	573	–	–	–	–	–	–	–	–	573
2004/05	–	586	–	–	–	–	–	–	–	–	586
2005/06	–	593	–	–	–	–	–	–	–	–	593
2006/07	–	636	–	–	–	–	–	–	–	–	636
2007/08	–	664	–	–	–	–	–	–	–	–	664
2008/09	–	659	–	–	–	–	–	–	–	–	659
2009/10	–	669	–	–	–	–	–	–	–	–	669
2010/11	–	649	–	–	–	–	–	–	–	–	649
2011/12	–	640	–	–	–	–	–	–	–	–	640
2012/13	–	633	–	–	–	–	–	–	–	–	633
2013/14	–	613	–	–	–	–	–	–	–	–	613
2014/15	–	584	–	–	–	–	–	–	–	–	584
2015/16	–	547	–	–	–	–	–	–	–	–	547
2016/17	–	519	–	–	–	–	–	–	–	–	519
2017/18	–	486	–	–	–	–	–	–	–	–	486
2018/19	1	472	–	–	–	–	–	–	–	–	473
2019/20	2	418	–	–	–	–	–	–	–	–	420
2020/21	26	375	61	39	41	45	47	45	54	61	401
2021/22	45	350	56	59	41	45	46	46	43	53	395
2022/23	77	361	78	58	61	40	48	50	47	51	438
2023/24	101	347	59	77	57	59	45	47	53	47	448
2024/25	130	330	50	60	74	58	58	51	52	54	460
2025/26	157	298	51	51	58	71	58	57	55	54	455