Divine Mercy Junior National School
Lucan · Roll number 19865S
- Catholic ethos
- DEIS
- Pupils in 2025/26
- 204
- −9 on 2024/25
- Over 10 years
- −61%
- Down 319 from 523 in 2015/16
- Girls and boys
- 107 / 97
- 52% girls
Pupils since 1993
Total enrolment each school year
Shaded: the last 10 years, 2015/16 to 2025/26.
Pupils by class
Published for each class from 2020/21.
This year, 2025/26
204 pupils across 8 classes
Every class, every year
Darker cells have more pupils. A group of pupils moves down one class and right one year.
| 2020/21 | 2021/22 | 2022/23 | 2023/24 | 2024/25 | 2025/26 | Average | |
|---|---|---|---|---|---|---|---|
| Junior Infants | 52 | 52 | 45 | 58 | 39 | 43 | 48.2 |
| Senior Infants | 76 | 47 | 55 | 50 | 61 | 46 | 55.8 |
| 1st Class | 78 | 82 | 54 | 57 | 58 | 65 | 65.7 |
| 2nd Class | 75 | 77 | 87 | 60 | 55 | 50 | 67.3 |
| 3rd Class | – | – | – | – | – | 0 | 0.0 |
| 4th Class | – | – | – | – | – | 0 | 0.0 |
| 5th Class | – | – | – | – | – | 0 | 0.0 |
| 6th Class | – | – | – | – | – | 0 | 0.0 |
JI and SI are Junior and Senior Infants.
Started Junior Infants in 2024/25
39 in Junior Infants (2024/25), 46 in Senior Infants (2025/26): 7 pupils more.
- 39Junior Infants2024/25
- 46Senior Infants2025/26
Started Junior Infants in 2023/24
58 in Junior Infants (2023/24), 65 in 1st Class (2025/26): 7 pupils more.
- 58Junior Infants2023/24
- 61Senior Infants2024/25
- 651st Class2025/26
Started Junior Infants in 2022/23
45 in Junior Infants (2022/23), 50 in 2nd Class (2025/26): 5 pupils more.
- 45Junior Infants2022/23
- 50Senior Infants2023/24
- 581st Class2024/25
- 502nd Class2025/26
Started Junior Infants in 2021/22
52 in Junior Infants (2021/22), 0 in 3rd Class (2025/26): 52 pupils fewer.
- 52Junior Infants2021/22
- 55Senior Infants2022/23
- 571st Class2023/24
- 552nd Class2024/25
- 03rd Class2025/26
Started Junior Infants in 2020/21
52 in Junior Infants (2020/21), 0 in 4th Class (2025/26): 52 pupils fewer.
- 52Junior Infants2020/21
- 47Senior Infants2021/22
- 541st Class2022/23
- 602nd Class2023/24
- 04th Class2025/26
In Senior Infants in 2020/21
76 in Senior Infants (2020/21), 0 in 5th Class (2025/26): 76 pupils fewer.
- 76Senior Infants2020/21
- 821st Class2021/22
- 872nd Class2022/23
- 05th Class2025/26
In 1st Class in 2020/21
78 in 1st Class (2020/21), 0 in 6th Class (2025/26): 78 pupils fewer.
- 781st Class2020/21
- 772nd Class2021/22
- 06th Class2025/26
Biggest one-year changes in a class
- +13Junior Infants in 2023/24 (45 to 58)
- −29Senior Infants in 2021/22 (76 to 47)
Class sizes
Mainstream class groups, 2006/07 to 2025/26.
Why these won't match pupils by class
Mainstream class groups only. The source does not identify which standard/year group each class group belongs to. So these figures won't match the pupils-by-class figures exactly.
In 2025/26. Choose a figure to chart it.
Class sizes over time
Average class size, 2006/07 to 2025/26
Teachers
Who teaches at Divine Mercy Junior National School, 2006/07 to 2025/26.
How we count teachers
Class teachers come from the Department of Education's class sizes: one for each mainstream class. Special education and special class teachers are the posts the National Council for Special Education (NCSE) allocates. We add a principal who doesn't teach a class where the Department's rules give the school one. These are posts, not people: part of a post can be a teacher shared with another school. Up to 2015/16 the Department counted every teacher itself. Known data issues
In 2025/26
21.5teaching posts
Our estimate: about 22 teachers.
- Class teachersOne for each of the 12 mainstream classes 12
- PrincipalRuns the school and doesn't teach a class 1
- Special education teachers162.5 hours of support teaching a week 6.5
- Special class teachersFor 2 autism classes 2
7.33 special needs assistants (SNAs) also work with pupils. 6 pupils are in special classes, which the class sizes leave out.
The NCSE has allocated 6.5 special education teachers, 2 special class teachers and 7.33 SNAs for next year.
Teachers since 2006/07
Teachers each school year, by role
To 2015/16: the Department of Education's count of every teacher. From 2019/20: our estimate, from class sizes and the NCSE's allocations. Dashed boxes: no special education figures were published for those years, so only class teachers and the principal are shown. Known data issues
Sources: Department of Education class sizes and teacher counts; NCSE school allocations and special classes (CC BY 4.0).
Nearby schools
The 6 primary schools closest to Divine Mercy Junior National School, measured in a straight line. Pupil numbers are for 2025/26.
| Number on map | School | Distance | Pupils | Since 2015/16 |
|---|---|---|---|---|
| Divine Mercy Junior National SchoolThis school | – | 204 |
−61.0%
|
|
| 1 | Divine Mercy Senior National School0.1 km · Lucan · DEIS | 0.1 km | 274 |
−46.9%
|
| 2 | Lucan Community National School0.3 km · Lucan · Multi-denominational | 0.3 km | 375 |
+443.5%
|
| 3 | St Peter Apostle Sen NS1.0 km · Dublin 22 · DEIS | 1.0 km | 278 |
+8.2%
|
| 4 | Neillstown N S1.1 km · Dublin 22 · DEIS | 1.1 km | 231 |
−24.3%
|
| 5 | Lucan East ETNS1.1 km · Lucan · Multi-denominational · DEIS | 1.1 km | 416 |
−10.2%
|
| 6 | Griffeen Valley Educate Together NS1.2 km · Lucan · Multi-denominational | 1.2 km | 466 |
−4.3%
|
About this school
Inspection reports open on gov.ie, under the name the school had when it was inspected. They describe specific areas of the school's work rather than giving an overall grade. Newer schools may not have one yet.
Contact
- Principal
- Marie Mullins
- Phone
- 014573095
- [email protected]
- Address
- Lynch's Lane, Lucan, Co. Dublin, K78 FW98
School
- Ethos
- Catholic
- Patron
- Archbishop of Dublin
- School type
- Ordinary
- School level
- Junior
- DEIS
- DEIS
Language and area
- Irish classification
- No subjects through Irish
- Gaeltacht
- Non-Gaeltacht
- Island
- Not on an island
- Local authority
- South Dublin County Council
- Planning area
- Lucan
Each detail is the latest one the Department of Education has recorded for this school. If a detail was left blank in 2025/26, we show it from an earlier year, so some details may be older than the pupil numbers. Known data issues
Data by year
33 school years from 1993/94 to 2025/26. Class figures start in 2020/21.
| Year | Total | Girls | Boys | JI | SI | 1st | 2nd | 3rd | 4th | 5th | 6th |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025/26 | 204 | 107 | 97 | 43 | 46 | 65 | 50 | 0 | 0 | 0 | 0 |
| 2024/25 | 213 | 116 | 97 | 39 | 61 | 58 | 55 | – | – | – | – |
| 2023/24 | 225 | 113 | 112 | 58 | 50 | 57 | 60 | – | – | – | – |
| 2022/23 | 241 | 114 | 127 | 45 | 55 | 54 | 87 | – | – | – | – |
| 2021/22 | 258 | 119 | 139 | 52 | 47 | 82 | 77 | – | – | – | – |
| 2020/21 | 281 | 120 | 161 | 52 | 76 | 78 | 75 | – | – | – | – |
| 2019/20 | 312 | 130 | 182 | – | – | – | – | – | – | – | – |
| 2018/19 | 349 | 164 | 185 | – | – | – | – | – | – | – | – |
| 2017/18 | 406 | 192 | 214 | – | – | – | – | – | – | – | – |
| 2016/17 | 444 | 215 | 229 | – | – | – | – | – | – | – | – |
| 2015/16 | 523 | 254 | 269 | – | – | – | – | – | – | – | – |
| 2014/15 | 531 | 262 | 269 | – | – | – | – | – | – | – | – |
| 2013/14 | 556 | 270 | 286 | – | – | – | – | – | – | – | – |
| 2012/13 | 581 | 272 | 309 | – | – | – | – | – | – | – | – |
| 2011/12 | 566 | 266 | 300 | – | – | – | – | – | – | – | – |
| 2010/11 | 559 | 271 | 288 | – | – | – | – | – | – | – | – |
| 2009/10 | 564 | 278 | 286 | – | – | – | – | – | – | – | – |
| 2008/09 | 560 | 272 | 288 | – | – | – | – | – | – | – | – |
| 2007/08 | 564 | 278 | 286 | – | – | – | – | – | – | – | – |
| 2006/07 | 564 | 266 | 298 | – | – | – | – | – | – | – | – |
| 2005/06 | 522 | 243 | 279 | – | – | – | – | – | – | – | – |
| 2004/05 | 476 | 232 | 244 | – | – | – | – | – | – | – | – |
| 2003/04 | 668 | 334 | 334 | – | – | – | – | – | – | – | – |
| 2002/03 | 626 | 323 | 303 | – | – | – | – | – | – | – | – |
| 2001/02 | 561 | 276 | 285 | – | – | – | – | – | – | – | – |
| 2000/01 | 485 | 240 | 245 | – | – | – | – | – | – | – | – |
| 1999/00 | 457 | 220 | 237 | – | – | – | – | – | – | – | – |
| 1998/99 | 474 | 225 | 249 | – | – | – | – | – | – | – | – |
| 1997/98 | 471 | 239 | 232 | – | – | – | – | – | – | – | – |
| 1996/97 | 416 | 200 | 216 | – | – | – | – | – | – | – | – |
| 1995/96 | 339 | 163 | 176 | – | – | – | – | – | – | – | – |
| 1994/95 | 315 | 153 | 162 | – | – | – | – | – | – | – | – |
| 1993/94 | 330 | 164 | 166 | – | – | – | – | – | – | – | – |