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S N CNOC AN SAMHRAIDH

Roll number: 12754U Crannagh, Summerhill, Athlone, Co. Roscommon

School details

Address: Crannagh, Summerhill, Athlone, Co. Roscommon (N37NY98)
Email: [email protected]
Phone: 0906492037
Principal: Tracy Henderson O'Raghallaigh
Ethos: Catholic
DEIS: N
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: Roscommon County Council
School patron: Bishop of Elphin
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

20.80

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	301	11	27.36	34	3
2007/08	319	11	29.00	33	6
2008/09	283	12	23.58	34	1
2009/10	271	10	27.10	31	4
2010/11	292	10	29.20	33	4
2011/12	278	11	25.27	32	1
2012/13	263	10	26.30	30	3
2013/14	232	10	23.20	28	0
2014/15	224	9	24.89	29	0
2015/16	220	9	24.44	32	2
2016/17	222	9	24.67	32	3
2017/18	227	9	25.22	31	2
2019/20	248	9	27.56	32	3
2020/21	242	10	24.20	31	2
2021/22	238	10	23.80	32	2
2022/23	237	10	23.70	31	3
2023/24	229	10	22.90	30	1
2024/25	233	10	23.30	29	0
2025/26	208	10	20.80	24	0

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 2006/07: 260 in 2005/06 → 306, +46 pupils.
Biggest loss in a single year: 2008/09: 324 in 2007/08 → 288, -36 pupils.
Largest single-class increase: 4th Class in 2022/23 (25 → 40, +15).
Largest single-class decrease: Senior Infants in 2021/22 (35 → 23, -12).
Largest cohort-step gain: 1st → 2nd in 2023/24 (23 → 30, +7).
Largest cohort-step loss: SI → 1st in 2023/24 (22 → 20, -2).
Overall: 68 (1974/75) → 223 (2025/26), 155.

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	14	25	21.0	6
Senior Infants	20	35	24.8	6
1st Class	20	34	26.0	6
2nd Class	22	37	29.8	6
3rd Class	26	39	31.7	6
4th Class	25	40	33.0	6
5th Class	31	42	34.3	6
6th Class	28	41	33.2	6
Total	68	324	202.0	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 22

SI 2021/22 23

1st 2022/23 23

2nd 2023/24 30

3rd 2024/25 30

4th 2025/26 32

Cohort 2021/22

JI 2021/22 22

SI 2022/23 22

-2

1st 2023/24 20

2nd 2024/25 22

3rd 2025/26 27

Cohort 2022/23

JI 2022/23 25

-1

SI 2023/24 24

1st 2024/25 25

2nd 2025/26 25

Cohort 2023/24

JI 2023/24 14

SI 2024/25 20

1st 2025/26 22

Cohort 2024/25

JI 2024/25 25

SI 2025/26 25

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	23	–	–	–	–	–	–	–	–	68
1975/76	–	–	–	–	–	–	–	–	–	–	72
1976/77	43	30	–	–	–	–	–	–	–	–	73
1977/78	44	30	–	–	–	–	–	–	–	–	74
1978/79	–	32	–	–	–	–	–	–	–	–	85
1979/80	59	39	–	–	–	–	–	–	–	–	98
1980/81	66	40	–	–	–	–	–	–	–	–	106
1981/82	72	42	–	–	–	–	–	–	–	–	114
1982/83	71	52	–	–	–	–	–	–	–	–	123
1983/84	77	64	–	–	–	–	–	–	–	–	141
1993/94	72	93	–	–	–	–	–	–	–	–	165
1994/95	73	94	–	–	–	–	–	–	–	–	167
1995/96	78	95	–	–	–	–	–	–	–	–	173
1996/97	84	100	–	–	–	–	–	–	–	–	184
1997/98	81	96	–	–	–	–	–	–	–	–	177
1998/99	87	96	–	–	–	–	–	–	–	–	183
1999/00	88	94	–	–	–	–	–	–	–	–	182
2000/01	91	91	–	–	–	–	–	–	–	–	182
2001/02	89	97	–	–	–	–	–	–	–	–	186
2002/03	102	99	–	–	–	–	–	–	–	–	201
2003/04	110	99	–	–	–	–	–	–	–	–	209
2004/05	121	105	–	–	–	–	–	–	–	–	226
2005/06	130	130	–	–	–	–	–	–	–	–	260
2006/07	146	160	–	–	–	–	–	–	–	–	306
2007/08	159	165	–	–	–	–	–	–	–	–	324
2008/09	142	146	–	–	–	–	–	–	–	–	288
2009/10	133	142	–	–	–	–	–	–	–	–	275
2010/11	140	155	–	–	–	–	–	–	–	–	295
2011/12	134	148	–	–	–	–	–	–	–	–	282
2012/13	128	141	–	–	–	–	–	–	–	–	269
2013/14	112	126	–	–	–	–	–	–	–	–	238
2014/15	105	131	–	–	–	–	–	–	–	–	236
2015/16	106	132	–	–	–	–	–	–	–	–	238
2016/17	104	134	–	–	–	–	–	–	–	–	238
2017/18	107	138	–	–	–	–	–	–	–	–	245
2018/19	105	143	–	–	–	–	–	–	–	–	248
2019/20	120	146	–	–	–	–	–	–	–	–	266
2020/21	111	147	22	35	32	37	26	31	31	28	258
2021/22	108	148	22	23	34	31	39	25	32	32	256
2022/23	112	142	25	22	23	34	31	40	31	31	254
2023/24	106	141	14	24	20	30	37	33	42	29	247
2024/25	101	148	25	20	25	22	30	37	34	41	249
2025/26	89	134	18	25	22	25	27	32	36	38	223