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ST MARYS JUNIOR N S

Roll number: 19575J Rowlagh, Clondalkin, Dublin 22

School details

Address: Rowlagh, Clondalkin, Dublin 22 (D22H504)
Email: [email protected]
Phone: 016263266
Principal: Maura O'Shea
Ethos: Catholic
DEIS: Y
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: South Dublin County Council
School patron: Archbishop of Dublin
School type: Ordinary with Special Classes
School level: Junior
Planning area: Palmerstown_Ronanstown_D20_22

Preliminary data

The latest year shown (2025/26) is preliminary and subject to revision when the official enrolment figures are released by the Department of Education.

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 1978/79: 44 in 1977/78 → 304, +260 pupils.
Biggest loss in a single year: 1993/94: 649 in 1983/84 → 461, -188 pupils.
Largest single-class increase: Senior Infants in 2022/23 (29 → 60, +31).
Largest single-class decrease: Senior Infants in 2021/22 (54 → 29, -25).
Largest cohort-step gain: JI → SI in 2022/23 (57 → 60, +3).
Largest cohort-step loss: 2nd → 3rd in 2021/22 (58 → 0, -58).
Overall: 44 (1977/78) → 183 (2025/26 (preliminary)), 139.

Summary statistics (class-level data)

Min / max / mean enrolment per class across the available years (2020/21–2024/25; preliminary year excluded from class stats).

Class	Min	Max	Mean	Years
Junior Infants	31	57	43.6	5
Senior Infants	29	60	46.6	5
1st Class	29	59	45.0	5
2nd Class	29	60	48.2	5
Total	44	649	286.3	40

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 31

-2

SI 2021/22 29

1st 2022/23 29

2nd 2023/24 29

-29

3rd 2024/25 0

Cohort 2021/22

JI 2021/22 57

SI 2022/23 60

-1

1st 2023/24 59

2nd 2024/25 60

Cohort 2022/23

JI 2022/23 44

-1

SI 2023/24 43

-2

1st 2024/25 41

Cohort 2023/24

JI 2023/24 47

SI 2024/25 47

Cohort 2024/25

JI 2024/25 39

Raw data by year

Years marked (preliminary) are subject to revision when official data are published.

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1977/78	25	19	–	–	–	–	–	–	–	–	44
1978/79	–	–	–	–	–	–	–	–	–	–	304
1979/80	168	171	–	–	–	–	–	–	–	–	339
1980/81	279	265	–	–	–	–	–	–	–	–	544
1981/82	285	284	–	–	–	–	–	–	–	–	569
1982/83	304	341	–	–	–	–	–	–	–	–	645
1983/84	297	352	–	–	–	–	–	–	–	–	649
1993/94	223	238	–	–	–	–	–	–	–	–	461
1994/95	199	232	–	–	–	–	–	–	–	–	431
1995/96	182	210	–	–	–	–	–	–	–	–	392
1996/97	158	196	–	–	–	–	–	–	–	–	354
1997/98	159	175	–	–	–	–	–	–	–	–	334
1998/99	129	164	–	–	–	–	–	–	–	–	293
1999/00	125	152	–	–	–	–	–	–	–	–	277
2000/01	122	150	–	–	–	–	–	–	–	–	272
2001/02	135	146	–	–	–	–	–	–	–	–	281
2002/03	146	134	–	–	–	–	–	–	–	–	280
2003/04	144	128	–	–	–	–	–	–	–	–	272
2004/05	124	120	–	–	–	–	–	–	–	–	244
2005/06	106	111	–	–	–	–	–	–	–	–	217
2006/07	110	120	–	–	–	–	–	–	–	–	230
2007/08	99	125	–	–	–	–	–	–	–	–	224
2008/09	115	119	–	–	–	–	–	–	–	–	234
2009/10	103	128	–	–	–	–	–	–	–	–	231
2010/11	102	115	–	–	–	–	–	–	–	–	217
2011/12	110	120	–	–	–	–	–	–	–	–	230
2012/13	107	128	–	–	–	–	–	–	–	–	235
2013/14	110	122	–	–	–	–	–	–	–	–	232
2014/15	112	125	–	–	–	–	–	–	–	–	237
2015/16	108	119	–	–	–	–	–	–	–	–	227
2016/17	102	104	–	–	–	–	–	–	–	–	206
2017/18	101	107	–	–	–	–	–	–	–	–	208
2018/19	99	100	–	–	–	–	–	–	–	–	199
2019/20	112	108	–	–	–	–	–	–	–	–	220
2020/21	98	97	31	54	42	58	–	–	–	–	195
2021/22	89	98	57	29	54	42	–	–	–	–	187
2022/23	91	98	44	60	29	52	–	–	–	–	189
2023/24	88	90	47	43	59	29	–	–	–	–	178
2024/25	93	94	39	47	41	60	–	–	–	–	187
2025/26 (preliminary)	93	90	–	–	–	–	–	–	–	–	183