St Marks Sen NS
Dublin 24 · Roll number 19390U
- Catholic ethos
- DEIS
- Ordinary with Special Classes
- Pupils in 2025/26
- 497
- +5 on 2024/25
- Over 10 years
- −4%
- Down 18 from 515 in 2015/16
- 19 classes in 2015/16, 21 now; average class 26.5 → 23.1
- Over 20 years: +26% from 395 in 2005/06
- Girls and boys
- 241 / 256
- 48% girls
Pupils since 1974
Total enrolment each school year
Shaded: the last 10 years, 2015/16 to 2025/26. 1983/84 is left out because its source file is incomplete, and no files exist for 1984/85 to 1992/93. Known data issues
Pupils by class
Published for each class from 2020/21.
This year, 2025/26
497 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 | – | – | – | – | – | 0 | 0.0 |
| Senior Infants | – | – | – | – | – | 0 | 0.0 |
| 1st Class | – | – | – | – | – | 0 | 0.0 |
| 2nd Class | – | – | – | – | – | 0 | 0.0 |
| 3rd Class | 129 | 106 | 128 | 127 | 114 | 127 | 121.8 |
| 4th Class | 123 | 130 | 109 | 129 | 123 | 114 | 121.3 |
| 5th Class | 128 | 120 | 134 | 110 | 129 | 124 | 124.2 |
| 6th Class | 129 | 128 | 124 | 125 | 115 | 132 | 125.5 |
JI and SI are Junior and Senior Infants.
Started Junior Infants in 2020/21
114 in 3rd Class (2024/25), 114 in 4th Class (2025/26): no change.
- 1143rd Class2024/25
- 1144th Class2025/26
In 3rd Class in 2023/24
127 in 3rd Class (2023/24), 124 in 5th Class (2025/26): 3 pupils fewer.
- 1273rd Class2023/24
- 1234th Class2024/25
- 1245th Class2025/26
In 3rd Class in 2022/23
128 in 3rd Class (2022/23), 132 in 6th Class (2025/26): 4 pupils more.
- 1283rd Class2022/23
- 1294th Class2023/24
- 1295th Class2024/25
- 1326th Class2025/26
In 3rd Class in 2021/22
106 in 3rd Class (2021/22), 115 in 6th Class (2024/25): 9 pupils more.
- 1063rd Class2021/22
- 1094th Class2022/23
- 1105th Class2023/24
- 1156th Class2024/25
In 3rd Class in 2020/21
129 in 3rd Class (2020/21), 125 in 6th Class (2023/24): 4 pupils fewer.
- 1293rd Class2020/21
- 1304th Class2021/22
- 1345th Class2022/23
- 1256th Class2023/24
In 4th Class in 2020/21
123 in 4th Class (2020/21), 124 in 6th Class (2022/23): 1 pupil more.
- 1234th Class2020/21
- 1205th Class2021/22
- 1246th Class2022/23
In 5th Class in 2020/21
128 in 5th Class (2020/21), 128 in 6th Class (2021/22): no change.
- 1285th Class2020/21
- 1286th Class2021/22
Biggest one-year changes in a class
- +223rd Class in 2022/23 (106 to 128)
- −245th Class in 2023/24 (134 to 110)
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 St Marks Sen NS, 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
36.9teaching posts
Our estimate: about 37 teachers.
- Class teachersOne for each of the 21 mainstream classes 21
- PrincipalRuns the school and doesn't teach a class 1
- Special education teachers347.5 hours of support teaching a week 13.9
- Special class teachersFor a mild general learning disability class 1
10 special needs assistants (SNAs) also work with pupils. 11 pupils are in special classes, which the class sizes leave out.
The NCSE has allocated 14 special education teachers, 1 special class teacher and 10 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 St Marks Sen NS, measured in a straight line. Pupil numbers are for 2025/26.
| Number on map | School | Distance | Pupils | Since 2015/16 |
|---|---|---|---|---|
| St Marks Sen NSThis school | – | 497 |
−3.5%
|
|
| 1 | St Marks Junior Mixed0.0 km · Dublin 24 · DEIS | 0.0 km | 449 |
−22.0%
|
| 2 | St Annes Primary School0.5 km · Dublin 24 · DEIS | 0.5 km | 301 |
−30.6%
|
| 3 | Tallaght Community National School0.6 km · Dublin 24 · Multi-denominational · DEIS | 0.6 km | 151 |
+57.3%
|
| 4 | St Brigids N S1.1 km · Dublin 24 · DEIS | 1.1 km | 206 |
−28.0%
|
| 5 | St Aidans NS1.2 km · Dublin 24 · DEIS | 1.2 km | 244 |
−22.8%
|
| 6 | An Chroi Ro Naofa Sois1.2 km · Dublin 24 · DEIS | 1.2 km | 167 |
−41.2%
|
What parents would prefer
In the Department of Education and Youth's Primary School Survey (November–December 2025), parents said whether they would prefer this school to be co-educational or single-sex, to have a denominational or multi-denominational patron, and to teach through Irish or English. These are preferences, not applications or enrolments.
Children at this school
Their parents: 113 of 429 households answered (26%). The true figures are likely within 7.6 points either way.
Patron
Teaching language
Boys and girls
Children not yet at school
Fewer than 30 parents of children not yet at school chose this school, so the Department didn't publish their answers.
The bracket shows the margin of error the Department published for this school: 7.6 points either way.
| Parents of | Multi-denominational | Through Irish | Single-sex |
|---|---|---|---|
| This school · children at school | 37% | 11% | 6% |
| Tallaght planning area · children at school | 42% | 19% | 7% |
| Tallaght planning area · children not yet at school | 44% | 18% | 9% |
| Ireland · children at school | 44% | 20% | 5% |
| Ireland · children not yet at school | 47% | 26% | 6% |
Source: Department of Education and Youth, Primary School Survey results, published 23 June 2026. Planning-area and Ireland figures also count parents at schools where too few answered for the school to get its own results. About these figures
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
- Michael Daly
- Phone
- 014513138
- [email protected]
- Address
- Springfield, Tallaght, Dublin 24, D24 FV07
School
- Ethos
- Catholic
- Patron
- Archbishop of Dublin
- School type
- Ordinary with Special Classes
- School level
- Senior
- 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
- Tallaght
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
42 school years from 1974/75 to 2025/26. Class figures start in 2020/21.
| Year | Total | Girls | Boys | JI | SI | 1st | 2nd | 3rd | 4th | 5th | 6th |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025/26 | 497 | 241 | 256 | 0 | 0 | 0 | 0 | 127 | 114 | 124 | 132 |
| 2024/25 | 492 | 249 | 243 | – | – | – | – | 114 | 123 | 129 | 115 |
| 2023/24 | 501 | 252 | 249 | – | – | – | – | 127 | 129 | 110 | 125 |
| 2022/23 | 504 | 249 | 255 | – | – | – | – | 128 | 109 | 134 | 124 |
| 2021/22 | 492 | 249 | 243 | – | – | – | – | 106 | 130 | 120 | 128 |
| 2020/21 | 515 | 263 | 252 | – | – | – | – | 129 | 123 | 128 | 129 |
| 2019/20 | 529 | 272 | 257 | – | – | – | – | – | – | – | – |
| 2018/19 | 535 | 268 | 267 | – | – | – | – | – | – | – | – |
| 2017/18 | 537 | 259 | 278 | – | – | – | – | – | – | – | – |
| 2016/17 | 523 | 230 | 293 | – | – | – | – | – | – | – | – |
| 2015/16 | 515 | 216 | 299 | – | – | – | – | – | – | – | – |
| 2014/15 | 523 | 229 | 294 | – | – | – | – | – | – | – | – |
| 2013/14 | 518 | 231 | 287 | – | – | – | – | – | – | – | – |
| 2012/13 | 558 | 265 | 293 | – | – | – | – | – | – | – | – |
| 2011/12 | 576 | 279 | 297 | – | – | – | – | – | – | – | – |
| 2010/11 | 545 | 264 | 281 | – | – | – | – | – | – | – | – |
| 2009/10 | 543 | 266 | 277 | – | – | – | – | – | – | – | – |
| 2008/09 | 508 | 240 | 268 | – | – | – | – | – | – | – | – |
| 2007/08 | 463 | 204 | 259 | – | – | – | – | – | – | – | – |
| 2006/07 | 437 | 201 | 236 | – | – | – | – | – | – | – | – |
| 2005/06 | 395 | 189 | 206 | – | – | – | – | – | – | – | – |
| 2004/05 | 358 | 166 | 192 | – | – | – | – | – | – | – | – |
| 2003/04 | 380 | 185 | 195 | – | – | – | – | – | – | – | – |
| 2002/03 | 355 | 180 | 175 | – | – | – | – | – | – | – | – |
| 2001/02 | 374 | 190 | 184 | – | – | – | – | – | – | – | – |
| 2000/01 | 393 | 196 | 197 | – | – | – | – | – | – | – | – |
| 1999/00 | 420 | 215 | 205 | – | – | – | – | – | – | – | – |
| 1998/99 | 450 | 208 | 242 | – | – | – | – | – | – | – | – |
| 1997/98 | 482 | 222 | 260 | – | – | – | – | – | – | – | – |
| 1996/97 | 535 | 241 | 294 | – | – | – | – | – | – | – | – |
| 1995/96 | 590 | 272 | 318 | – | – | – | – | – | – | – | – |
| 1994/95 | 646 | 317 | 329 | – | – | – | – | – | – | – | – |
| 1993/94 | 713 | 350 | 363 | – | – | – | – | – | – | – | – |
| 1983/84 | 713 | 310 | 403 | – | – | – | – | – | – | – | – |
| 1982/83 | 570 | 256 | 314 | – | – | – | – | – | – | – | – |
| 1981/82 | 543 | 243 | 300 | – | – | – | – | – | – | – | – |
| 1980/81 | 509 | 233 | 276 | – | – | – | – | – | – | – | – |
| 1978/79 | 310 | – | – | – | – | – | – | – | – | – | – |
| 1977/78 | 272 | 137 | 135 | – | – | – | – | – | – | – | – |
| 1976/77 | 276 | 153 | 123 | – | – | – | – | – | – | – | – |
| 1975/76 | 294 | – | – | – | – | – | – | – | – | – | – |
| 1974/75 | 341 | 176 | 165 | – | – | – | – | – | – | – | – |