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DIVINE MERCY JUNIOR NATIONAL SCHOOL

Roll number: 19865S Lynch's Lane, Lucan, Co. Dublin

School details

Address: Lynch's Lane, Lucan, Co. Dublin (K78FW98)
Email: [email protected]
Phone: 014573095
Principal: Marie Mullins
Ethos: Catholic
DEIS: N
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: South Dublin County Council
School patron: Archbishop of Dublin
School type: Ordinary
School level: Junior
Planning area: Lucan

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: 1996/97: 339 in 1995/96 → 416, +77 pupils.
Biggest loss in a single year: 2004/05: 668 in 2003/04 → 476, -192 pupils.
Largest single-class increase: Junior Infants in 2023/24 (45 → 58, +13).
Largest single-class decrease: Senior Infants in 2021/22 (76 → 47, -29).
Largest cohort-step gain: SI → 1st in 2024/25 (50 → 58, +8).
Largest cohort-step loss: 2nd → 3rd in 2023/24 (87 → 0, -87).
Overall: 330 (1993/94) → 204 (2025/26 (preliminary)), -126.

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	39	58	49.2	5
Senior Infants	47	76	57.8	5
1st Class	54	82	65.8	5
2nd Class	55	87	70.8	5
Total	204	668	443.7	33

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 52

-5

SI 2021/22 47

1st 2022/23 54

2nd 2023/24 60

-60

3rd 2024/25 0

Cohort 2021/22

JI 2021/22 52

SI 2022/23 55

1st 2023/24 57

-2

2nd 2024/25 55

Cohort 2022/23

JI 2022/23 45

SI 2023/24 50

1st 2024/25 58

Cohort 2023/24

JI 2023/24 58

SI 2024/25 61

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
1993/94	164	166	–	–	–	–	–	–	–	–	330
1994/95	153	162	–	–	–	–	–	–	–	–	315
1995/96	163	176	–	–	–	–	–	–	–	–	339
1996/97	200	216	–	–	–	–	–	–	–	–	416
1997/98	239	232	–	–	–	–	–	–	–	–	471
1998/99	225	249	–	–	–	–	–	–	–	–	474
1999/00	220	237	–	–	–	–	–	–	–	–	457
2000/01	240	245	–	–	–	–	–	–	–	–	485
2001/02	276	285	–	–	–	–	–	–	–	–	561
2002/03	323	303	–	–	–	–	–	–	–	–	626
2003/04	334	334	–	–	–	–	–	–	–	–	668
2004/05	232	244	–	–	–	–	–	–	–	–	476
2005/06	243	279	–	–	–	–	–	–	–	–	522
2006/07	266	298	–	–	–	–	–	–	–	–	564
2007/08	278	286	–	–	–	–	–	–	–	–	564
2008/09	272	288	–	–	–	–	–	–	–	–	560
2009/10	278	286	–	–	–	–	–	–	–	–	564
2010/11	271	288	–	–	–	–	–	–	–	–	559
2011/12	266	300	–	–	–	–	–	–	–	–	566
2012/13	272	309	–	–	–	–	–	–	–	–	581
2013/14	270	286	–	–	–	–	–	–	–	–	556
2014/15	262	269	–	–	–	–	–	–	–	–	531
2015/16	254	269	–	–	–	–	–	–	–	–	523
2016/17	215	229	–	–	–	–	–	–	–	–	444
2017/18	192	214	–	–	–	–	–	–	–	–	406
2018/19	164	185	–	–	–	–	–	–	–	–	349
2019/20	130	182	–	–	–	–	–	–	–	–	312
2020/21	120	161	52	76	78	75	–	–	–	–	281
2021/22	119	139	52	47	82	77	–	–	–	–	258
2022/23	114	127	45	55	54	87	–	–	–	–	241
2023/24	113	112	58	50	57	60	–	–	–	–	225
2024/25	116	97	39	61	58	55	–	–	–	–	213
2025/26 (preliminary)	107	97	–	–	–	–	–	–	–	–	204