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S N AN CUSAN

Roll number: 18864L Coosan, Athlone, Co. Westmeath

School details

Address: Coosan, Athlone, Co. Westmeath (N37TD88)
Email: [email protected]
Phone: 0906478356
Principal: Thomas Flahive
Ethos: Catholic
DEIS: N
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: Westmeath County Council
School patron: Bishop of Ardagh & Clonmacnoise
School type: Ordinary with Special Classes
School level: All-Through School
Planning area: Athlone

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

25.06

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	276	10	27.60	34	4
2007/08	285	10	28.50	35	3
2008/09	287	10	28.70	35	5
2009/10	312	11	28.36	36	5
2010/11	341	12	28.42	37	4
2011/12	351	13	27.00	33	5
2012/13	353	13	27.15	36	3
2013/14	382	14	27.29	33	4
2014/15	373	14	26.64	33	2
2015/16	399	15	26.60	32	2
2016/17	392	15	26.13	32	1
2017/18	403	15	26.87	32	1
2019/20	416	16	26.00	28	0
2020/21	417	16	26.06	28	0
2021/22	414	16	25.88	29	0
2022/23	406	16	25.38	28	0
2023/24	402	16	25.12	27	0
2024/25	402	16	25.12	27	0
2025/26	401	16	25.06	29	0

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 1993/94: 137 in 1983/84 → 228, +91 pupils.
Biggest loss in a single year: 2005/06: 268 in 2004/05 → 248, -20 pupils.
Largest single-class increase: 3rd Class in 2025/26 (52 → 62, +10).
Largest single-class decrease: 2nd Class in 2021/22 (55 → 47, -8).
Largest cohort-step gain: 2nd → 3rd in 2025/26 (54 → 62, +8).
Largest cohort-step loss: JI → SI in 2021/22 (56 → 52, -4).
Overall: 87 (1974/75) → 413 (2025/26), 326.

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	44	56	51.0	6
Senior Infants	44	54	50.2	6
1st Class	50	53	50.7	6
2nd Class	47	55	51.5	6
3rd Class	45	62	52.0	6
4th Class	45	54	50.5	6
5th Class	48	56	52.3	6
6th Class	46	56	51.0	6
Total	87	426	276.5	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 56

-4

SI 2021/22 52

-1

1st 2022/23 51

2nd 2023/24 51

3rd 2024/25 52

4th 2025/26 54

Cohort 2021/22

JI 2021/22 56

-2

SI 2022/23 54

-1

1st 2023/24 53

2nd 2024/25 54

3rd 2025/26 62

Cohort 2022/23

JI 2022/23 50

SI 2023/24 50

1st 2024/25 50

2nd 2025/26 52

Cohort 2023/24

JI 2023/24 50

SI 2024/25 51

-1

1st 2025/26 50

Cohort 2024/25

JI 2024/25 44

SI 2025/26 44

Cohort 2025/26

JI 2025/26 50

Raw data by year

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1974/75	41	46	–	–	–	–	–	–	–	–	87
1976/77	48	49	–	–	–	–	–	–	–	–	97
1977/78	57	48	–	–	–	–	–	–	–	–	105
1978/79	60	52	–	–	–	–	–	–	–	–	112
1979/80	52	54	–	–	–	–	–	–	–	–	106
1980/81	64	64	–	–	–	–	–	–	–	–	128
1981/82	64	64	–	–	–	–	–	–	–	–	128
1982/83	65	65	–	–	–	–	–	–	–	–	130
1983/84	70	67	–	–	–	–	–	–	–	–	137
1993/94	120	108	–	–	–	–	–	–	–	–	228
1994/95	125	103	–	–	–	–	–	–	–	–	228
1995/96	119	101	–	–	–	–	–	–	–	–	220
1996/97	117	95	–	–	–	–	–	–	–	–	212
1997/98	117	109	–	–	–	–	–	–	–	–	226
1998/99	115	122	–	–	–	–	–	–	–	–	237
1999/00	115	114	–	–	–	–	–	–	–	–	229
2000/01	126	120	–	–	–	–	–	–	–	–	246
2001/02	124	121	–	–	–	–	–	–	–	–	245
2002/03	123	127	–	–	–	–	–	–	–	–	250
2003/04	120	140	–	–	–	–	–	–	–	–	260
2004/05	124	144	–	–	–	–	–	–	–	–	268
2005/06	115	133	–	–	–	–	–	–	–	–	248
2006/07	143	133	–	–	–	–	–	–	–	–	276
2007/08	141	144	–	–	–	–	–	–	–	–	285
2008/09	144	143	–	–	–	–	–	–	–	–	287
2009/10	156	156	–	–	–	–	–	–	–	–	312
2010/11	177	164	–	–	–	–	–	–	–	–	341
2011/12	190	161	–	–	–	–	–	–	–	–	351
2012/13	173	180	–	–	–	–	–	–	–	–	353
2013/14	181	201	–	–	–	–	–	–	–	–	382
2014/15	181	192	–	–	–	–	–	–	–	–	373
2015/16	186	213	–	–	–	–	–	–	–	–	399
2016/17	187	205	–	–	–	–	–	–	–	–	392
2017/18	195	208	–	–	–	–	–	–	–	–	403
2018/19	189	212	–	–	–	–	–	–	–	–	401
2019/20	195	227	–	–	–	–	–	–	–	–	422
2020/21	207	216	56	50	50	55	51	51	56	48	423
2021/22	206	220	56	52	50	47	53	50	51	56	426
2022/23	209	209	50	54	51	50	45	53	51	52	418
2023/24	220	194	50	50	53	51	49	45	53	51	414
2024/25	220	194	44	51	50	54	52	50	48	53	414
2025/26	218	195	50	44	50	52	62	54	55	46	413