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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

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
16.50
2025/26
Mainstream classes
12
2025/26
Largest class group
21
2025/26
Classes with 30+ pupils
0
2025/26

Class group metrics trend

Class group metrics by year

Year Mainstream class pupils Mainstream classes Average class size Largest class Classes 30+
2006/07 541 23 23.52 25 0
2007/08 542 23 23.57 25 0
2008/09 540 23 23.48 25 0
2009/10 547 23 23.78 25 0
2010/11 542 23 23.57 25 0
2011/12 566 24 23.58 26 0
2012/13 581 24 24.21 26 0
2013/14 556 24 23.17 27 0
2014/15 531 23 23.09 28 0
2015/16 523 22 23.77 26 0
2016/17 444 20 22.20 25 0
2017/18 406 17 23.88 28 0
2019/20 312 14 22.29 28 0
2020/21 281 13 21.62 27 0
2021/22 258 12 21.50 28 0
2022/23 241 14 17.21 20 0
2023/24 225 14 16.07 21 0
2024/25 213 13 16.38 21 0
2025/26 198 12 16.50 21 0

Data highlights

Key numbers to spot outliers or notable changes.

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 39 58 48.2 6
Senior Infants 46 76 55.8 6
1st Class 54 82 65.7 6
2nd Class 50 87 67.3 6
3rd Class 0 0 0.0 1
4th Class 0 0 0.0 1
5th Class 0 0 0.0 1
6th Class 0 0 0.0 1
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

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
+7
1st 2022/23 54
+6
2nd 2023/24 60
-60
3rd 2024/25 0
0
4th 2025/26 0
Cohort 2021/22
JI 2021/22 52
+3
SI 2022/23 55
+2
1st 2023/24 57
-2
2nd 2024/25 55
-55
3rd 2025/26 0
Cohort 2022/23
JI 2022/23 45
+5
SI 2023/24 50
+8
1st 2024/25 58
-8
2nd 2025/26 50
Cohort 2023/24
JI 2023/24 58
+3
SI 2024/25 61
+4
1st 2025/26 65
Cohort 2024/25
JI 2024/25 39
+7
SI 2025/26 46
Cohort 2025/26
JI 2025/26 43

Raw data by year

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
2025/26 107 97 43 46 65 50 – – – – 204