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CLOCHAR MUIRE N S

Roll number: 17228B Rathdrum, Co. Wicklow

School details

Address: Rathdrum, Co. Wicklow (A67KW18)
Email: [email protected]
Phone: 040446256
Principal: Breda Sheehan
Ethos: Catholic
DEIS: N
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: Wicklow County Council
School patron: Archbishop of Dublin
School type: Ordinary
School level: All-Through School
Planning area: Rathdrum

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

29.33

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	125	5	25.00	27	0
2007/08	119	5	23.80	27	0
2008/09	123	5	24.60	27	0
2009/10	127	5	25.40	28	0
2010/11	122	5	24.40	31	1
2011/12	125	5	25.00	28	0
2012/13	124	5	24.80	27	0
2013/14	130	5	26.00	31	1
2014/15	140	5	28.00	32	1
2015/16	139	5	27.80	33	1
2016/17	129	5	25.80	31	1
2017/18	132	5	26.40	35	1
2019/20	143	5	28.60	34	2
2020/21	140	6	23.33	29	0
2021/22	138	6	23.00	26	0
2022/23	140	6	23.33	30	1
2023/24	149	6	24.83	27	0
2024/25	160	6	26.67	30	1
2025/26	176	6	29.33	32	4

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 1978/79: 154 in 1977/78 → 171, +17 pupils.
Biggest loss in a single year: 1993/94: 187 in 1983/84 → 143, -44 pupils.
Largest single-class increase: 1st Class in 2025/26 (16 → 29, +13).
Largest single-class decrease: 4th Class in 2021/22 (23 → 14, -9).
Largest cohort-step gain: 1st → 2nd in 2024/25 (16 → 21, +5).
Largest cohort-step loss: SI → 1st in 2024/25 (18 → 16, -2).
Overall: 120 (1974/75) → 176 (2025/26), 56.

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	11	24	17.8	6
Senior Infants	12	25	16.7	6
1st Class	14	29	17.7	6
2nd Class	13	21	18.0	6
3rd Class	14	25	19.0	6
4th Class	14	23	20.0	6
5th Class	15	23	20.7	6
6th Class	14	24	20.7	6
Total	120	189	143.0	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 11

SI 2021/22 12

1st 2022/23 14

-1

2nd 2023/24 13

3rd 2024/25 16

4th 2025/26 19

Cohort 2021/22

JI 2021/22 14

SI 2022/23 14

1st 2023/24 16

2nd 2024/25 21

3rd 2025/26 25

Cohort 2022/23

JI 2022/23 19

-1

SI 2023/24 18

-2

1st 2024/25 16

2nd 2025/26 20

Cohort 2023/24

JI 2023/24 24

SI 2024/25 25

1st 2025/26 29

Cohort 2024/25

JI 2024/25 18

SI 2025/26 18

Cohort 2025/26

JI 2025/26 21

Raw data by year

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1974/75	120	–	–	–	–	–	–	–	–	–	120
1975/76	–	–	–	–	–	–	–	–	–	–	134
1976/77	146	–	–	–	–	–	–	–	–	–	146
1977/78	154	–	–	–	–	–	–	–	–	–	154
1978/79	171	–	–	–	–	–	–	–	–	–	171
1979/80	166	–	–	–	–	–	–	–	–	–	166
1980/81	168	–	–	–	–	–	–	–	–	–	168
1981/82	181	–	–	–	–	–	–	–	–	–	181
1982/83	189	–	–	–	–	–	–	–	–	–	189
1983/84	187	–	–	–	–	–	–	–	–	–	187
1993/94	139	4	–	–	–	–	–	–	–	–	143
1994/95	136	5	–	–	–	–	–	–	–	–	141
1995/96	132	6	–	–	–	–	–	–	–	–	138
1996/97	137	7	–	–	–	–	–	–	–	–	144
1997/98	135	6	–	–	–	–	–	–	–	–	141
1998/99	129	6	–	–	–	–	–	–	–	–	135
1999/00	130	7	–	–	–	–	–	–	–	–	137
2000/01	130	5	–	–	–	–	–	–	–	–	135
2001/02	141	–	–	–	–	–	–	–	–	–	141
2002/03	143	–	–	–	–	–	–	–	–	–	143
2003/04	143	–	–	–	–	–	–	–	–	–	143
2004/05	134	–	–	–	–	–	–	–	–	–	134
2005/06	126	–	–	–	–	–	–	–	–	–	126
2006/07	128	–	–	–	–	–	–	–	–	–	128
2007/08	123	–	–	–	–	–	–	–	–	–	123
2008/09	127	–	–	–	–	–	–	–	–	–	127
2009/10	127	–	–	–	–	–	–	–	–	–	127
2010/11	122	–	–	–	–	–	–	–	–	–	122
2011/12	125	–	–	–	–	–	–	–	–	–	125
2012/13	124	–	–	–	–	–	–	–	–	–	124
2013/14	130	–	–	–	–	–	–	–	–	–	130
2014/15	140	–	–	–	–	–	–	–	–	–	140
2015/16	139	–	–	–	–	–	–	–	–	–	139
2016/17	129	–	–	–	–	–	–	–	–	–	129
2017/18	132	–	–	–	–	–	–	–	–	–	132
2018/19	140	–	–	–	–	–	–	–	–	–	140
2019/20	143	–	–	–	–	–	–	–	–	–	143
2020/21	140	–	11	13	17	21	14	23	20	21	140
2021/22	138	–	14	12	14	18	22	14	23	21	138
2022/23	140	–	19	14	14	15	19	22	15	22	140
2023/24	149	–	24	18	16	13	18	23	23	14	149
2024/25	160	–	18	25	16	21	16	19	23	22	160
2025/26	176	–	21	18	29	20	25	19	20	24	176