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SCOIL MHUIRE

Roll number: 17845C Brierhill School, Brierhill, Galway

School details

Address: Brierhill School, Brierhill, Galway (H91E5C9)
Email: [email protected]
Phone: 091751543
Principal: Rita Keaveney
Ethos: Catholic
DEIS: N
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: Galway City Council
School patron: Bishop of Galway, Kilmacduagh & Kilfenora
School type: Ordinary with Special Classes
School level: All-Through School
Planning area: Galway City

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

21.10

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	234	8	29.25	33	5
2007/08	244	9	27.11	32	3
2008/09	251	9	27.89	31	2
2009/10	256	9	28.44	30	3
2010/11	250	9	27.78	30	2
2011/12	253	9	28.11	30	1
2012/13	250	9	27.78	31	1
2013/14	253	9	28.11	29	0
2014/15	253	10	25.30	31	2
2015/16	233	9	25.89	31	2
2016/17	221	9	24.56	30	1
2017/18	242	9	26.89	32	2
2019/20	240	9	26.67	33	3
2020/21	229	9	25.44	30	1
2021/22	229	9	25.44	30	1
2022/23	228	9	25.33	30	2
2023/24	235	9	26.11	30	2
2024/25	229	9	25.44	30	1
2025/26	211	10	21.10	30	3

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 2017/18: 227 in 2016/17 → 250, +23 pupils.
Biggest loss in a single year: 2015/16: 259 in 2014/15 → 239, -20 pupils.
Largest single-class increase: 6th Class in 2024/25 (29 → 40, +11).
Largest single-class decrease: 6th Class in 2025/26 (40 → 28, -12).
Largest cohort-step gain: 1st → 2nd in 2025/26 (26 → 32, +6).
Largest cohort-step loss: SI → 1st in 2023/24 (30 → 28, -2).
Overall: 112 (1975/76) → 223 (2025/26), 111.

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	15	30	24.7	6
Senior Infants	24	30	27.0	6
1st Class	25	29	27.2	6
2nd Class	25	35	28.8	6
3rd Class	26	35	29.3	6
4th Class	27	38	31.0	6
5th Class	26	39	30.7	6
6th Class	25	40	30.2	6
Total	112	261	202.0	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 27

-1

SI 2021/22 26

-1

1st 2022/23 25

2nd 2023/24 25

3rd 2024/25 28

4th 2025/26 33

Cohort 2021/22

JI 2021/22 30

SI 2022/23 30

-2

1st 2023/24 28

-1

2nd 2024/25 27

3rd 2025/26 31

Cohort 2022/23

JI 2022/23 26

-1

SI 2023/24 25

1st 2024/25 26

2nd 2025/26 32

Cohort 2023/24

JI 2023/24 29

-1

SI 2024/25 28

1st 2025/26 28

Cohort 2024/25

JI 2024/25 21

SI 2025/26 24

Cohort 2025/26

JI 2025/26 15

Raw data by year

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1975/76	–	–	–	–	–	–	–	–	–	–	112
1976/77	53	65	–	–	–	–	–	–	–	–	118
1977/78	50	69	–	–	–	–	–	–	–	–	119
1978/79	–	–	–	–	–	–	–	–	–	–	118
1979/80	61	67	–	–	–	–	–	–	–	–	128
1980/81	59	66	–	–	–	–	–	–	–	–	125
1981/82	63	66	–	–	–	–	–	–	–	–	129
1982/83	68	61	–	–	–	–	–	–	–	–	129
1983/84	64	67	–	–	–	–	–	–	–	–	131
1993/94	65	67	–	–	–	–	–	–	–	–	132
1994/95	68	77	–	–	–	–	–	–	–	–	145
1995/96	68	95	–	–	–	–	–	–	–	–	163
1996/97	73	95	–	–	–	–	–	–	–	–	168
1997/98	74	99	–	–	–	–	–	–	–	–	173
1998/99	76	104	–	–	–	–	–	–	–	–	180
1999/00	83	105	–	–	–	–	–	–	–	–	188
2000/01	80	113	–	–	–	–	–	–	–	–	193
2001/02	86	117	–	–	–	–	–	–	–	–	203
2002/03	97	120	–	–	–	–	–	–	–	–	217
2003/04	105	119	–	–	–	–	–	–	–	–	224
2004/05	109	126	–	–	–	–	–	–	–	–	235
2005/06	97	124	–	–	–	–	–	–	–	–	221
2006/07	96	138	–	–	–	–	–	–	–	–	234
2007/08	103	141	–	–	–	–	–	–	–	–	244
2008/09	107	147	–	–	–	–	–	–	–	–	254
2009/10	107	154	–	–	–	–	–	–	–	–	261
2010/11	105	151	–	–	–	–	–	–	–	–	256
2011/12	112	147	–	–	–	–	–	–	–	–	259
2012/13	112	144	–	–	–	–	–	–	–	–	256
2013/14	121	138	–	–	–	–	–	–	–	–	259
2014/15	120	139	–	–	–	–	–	–	–	–	259
2015/16	108	131	–	–	–	–	–	–	–	–	239
2016/17	101	126	–	–	–	–	–	–	–	–	227
2017/18	111	139	–	–	–	–	–	–	–	–	250
2018/19	110	143	–	–	–	–	–	–	–	–	253
2019/20	111	140	–	–	–	–	–	–	–	–	251
2020/21	112	129	27	29	27	35	26	27	28	30	241
2021/22	112	129	30	26	29	26	35	28	26	29	241
2022/23	113	127	26	30	25	28	26	38	30	25	240
2023/24	116	130	29	25	28	25	30	30	39	29	246
2024/25	110	131	21	28	26	27	28	30	29	40	241
2025/26	102	121	15	24	28	32	31	33	32	28	223