St Marys N S
Dublin 3 · Roll number 19981U
- Catholic ethos
- DEIS
- Ordinary with Special Classes
- Pupils in 2025/26
- 212
- +6 on 2024/25
- Over 10 years
- −16%
- Down 40 from 252 in 2015/16
- Girls and boys
- 148 / 64
- 70% 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
212 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 | 35 | 38 | 45 | 42 | 36 | 43 | 39.8 |
| Senior Infants | 26 | 36 | 33 | 39 | 40 | 35 | 34.8 |
| 1st Class | 35 | 23 | 38 | 35 | 39 | 39 | 34.8 |
| 2nd Class | 19 | 15 | 10 | 21 | 18 | 23 | 17.7 |
| 3rd Class | 22 | 21 | 15 | 10 | 21 | 24 | 18.8 |
| 4th Class | 29 | 22 | 19 | 13 | 10 | 24 | 19.5 |
| 5th Class | 12 | 27 | 24 | 24 | 13 | 10 | 18.3 |
| 6th Class | 24 | 12 | 26 | 23 | 23 | 14 | 20.3 |
JI and SI are Junior and Senior Infants.
Started Junior Infants in 2024/25
36 in Junior Infants (2024/25), 35 in Senior Infants (2025/26): 1 pupil fewer.
- 36Junior Infants2024/25
- 35Senior Infants2025/26
Started Junior Infants in 2023/24
42 in Junior Infants (2023/24), 39 in 1st Class (2025/26): 3 pupils fewer.
- 42Junior Infants2023/24
- 40Senior Infants2024/25
- 391st Class2025/26
Started Junior Infants in 2022/23
45 in Junior Infants (2022/23), 23 in 2nd Class (2025/26): 22 pupils fewer.
- 45Junior Infants2022/23
- 39Senior Infants2023/24
- 391st Class2024/25
- 232nd Class2025/26
Started Junior Infants in 2021/22
38 in Junior Infants (2021/22), 24 in 3rd Class (2025/26): 14 pupils fewer.
- 38Junior Infants2021/22
- 33Senior Infants2022/23
- 351st Class2023/24
- 182nd Class2024/25
- 243rd Class2025/26
Started Junior Infants in 2020/21
35 in Junior Infants (2020/21), 24 in 4th Class (2025/26): 11 pupils fewer.
- 35Junior Infants2020/21
- 36Senior Infants2021/22
- 381st Class2022/23
- 212nd Class2023/24
- 213rd Class2024/25
- 244th Class2025/26
In Senior Infants in 2020/21
26 in Senior Infants (2020/21), 10 in 5th Class (2025/26): 16 pupils fewer.
- 26Senior Infants2020/21
- 231st Class2021/22
- 102nd Class2022/23
- 103rd Class2023/24
- 104th Class2024/25
- 105th Class2025/26
In 1st Class in 2020/21
35 in 1st Class (2020/21), 14 in 6th Class (2025/26): 21 pupils fewer.
- 351st Class2020/21
- 152nd Class2021/22
- 153rd Class2022/23
- 134th Class2023/24
- 135th Class2024/25
- 146th Class2025/26
In 2nd Class in 2020/21
19 in 2nd Class (2020/21), 23 in 6th Class (2024/25): 4 pupils more.
- 192nd Class2020/21
- 213rd Class2021/22
- 194th Class2022/23
- 245th Class2023/24
- 236th Class2024/25
In 3rd Class in 2020/21
22 in 3rd Class (2020/21), 23 in 6th Class (2023/24): 1 pupil more.
- 223rd Class2020/21
- 224th Class2021/22
- 245th Class2022/23
- 236th Class2023/24
In 4th Class in 2020/21
29 in 4th Class (2020/21), 26 in 6th Class (2022/23): 3 pupils fewer.
- 294th Class2020/21
- 275th Class2021/22
- 266th Class2022/23
In 5th Class in 2020/21
12 in 5th Class (2020/21), 12 in 6th Class (2021/22): no change.
- 125th Class2020/21
- 126th Class2021/22
Biggest one-year changes in a class
- +155th Class in 2021/22 (12 to 27)
- −121st Class in 2021/22 (35 to 23)
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 Marys N S, 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
16.8teaching posts
Our estimate: about 17 teachers.
- Class teachersOne for each of the 11 mainstream classes 11
- PrincipalRuns the school and doesn't teach a class 1
- Special education teachers95 hours of support teaching a week 3.8
- Special class teachersFor an autism class 1
6 special needs assistants (SNAs) also work with pupils. 6 pupils are in special classes, which the class sizes leave out.
The NCSE has allocated 3.9 special education teachers, 1 special class teacher and 6 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 Marys N S, measured in a straight line. Pupil numbers are for 2025/26.
| Number on map | School | Distance | Pupils | Since 2015/16 |
|---|---|---|---|---|
| St Marys N SThis school | – | 212 |
−15.9%
|
|
| 1 | St Joseph¿s Primary School, An Edmund Rice School0.3 km · Dublin 3 · Boys · DEIS | 0.3 km | 116 |
−11.5%
|
| 2 | St Columbas N S MXD0.7 km · Dublin 3 · Church of Ireland | 0.7 km | 90 |
−10.9%
|
| 3 | Howth RD MXD N S0.8 km · Dublin 3 · Presbyterian | 0.8 km | 89 |
−9.2%
|
| 4 | S N Mhuire na mBrathar0.8 km · Marino | 0.8 km | 336 |
+6.0%
|
| 5 | St Vincents de Paul Junior N S0.8 km · Dublin 9 | 0.8 km | 334 |
−18.3%
|
| 6 | St Vincent de Paul Senior School0.8 km · Dublin 9 | 0.8 km | 305 |
0.0%
|
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
- Thomas Gallagher
- Phone
- 018377551
- [email protected]
- Address
- Windsor Avenue, Fairview, Dublin 3, D03 AH64
School
- Ethos
- Catholic
- Patron
- Archbishop of Dublin
- School type
- Ordinary with Special Classes
- School level
- All Through
- DEIS
- DEIS
Language and area
- Irish classification
- No subjects through Irish
- Gaeltacht
- Non-Gaeltacht
- Island
- Not on an island
- Local authority
- Dublin City Council
- Planning area
- Drumcondra–Marino–Dublin1
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 | 212 | 148 | 64 | 43 | 35 | 39 | 23 | 24 | 24 | 10 | 14 |
| 2024/25 | 206 | 146 | 60 | 36 | 40 | 39 | 18 | 21 | 10 | 13 | 23 |
| 2023/24 | 213 | 152 | 61 | 42 | 39 | 35 | 21 | 10 | 13 | 24 | 23 |
| 2022/23 | 216 | 160 | 56 | 45 | 33 | 38 | 10 | 15 | 19 | 24 | 26 |
| 2021/22 | 200 | 147 | 53 | 38 | 36 | 23 | 15 | 21 | 22 | 27 | 12 |
| 2020/21 | 202 | 154 | 48 | 35 | 26 | 35 | 19 | 22 | 29 | 12 | 24 |
| 2019/20 | 222 | 163 | 59 | – | – | – | – | – | – | – | – |
| 2018/19 | 226 | 171 | 55 | – | – | – | – | – | – | – | – |
| 2017/18 | 227 | 167 | 60 | – | – | – | – | – | – | – | – |
| 2016/17 | 241 | 180 | 61 | – | – | – | – | – | – | – | – |
| 2015/16 | 252 | 176 | 76 | – | – | – | – | – | – | – | – |
| 2014/15 | 211 | 147 | 64 | – | – | – | – | – | – | – | – |
| 2013/14 | 221 | 165 | 56 | – | – | – | – | – | – | – | – |
| 2012/13 | 211 | 163 | 48 | – | – | – | – | – | – | – | – |
| 2011/12 | 212 | 168 | 44 | – | – | – | – | – | – | – | – |
| 2010/11 | 235 | 178 | 57 | – | – | – | – | – | – | – | – |
| 2009/10 | 236 | 184 | 52 | – | – | – | – | – | – | – | – |
| 2008/09 | 253 | 193 | 60 | – | – | – | – | – | – | – | – |
| 2007/08 | 239 | 180 | 59 | – | – | – | – | – | – | – | – |
| 2006/07 | 233 | 173 | 60 | – | – | – | – | – | – | – | – |
| 2005/06 | 226 | 167 | 59 | – | – | – | – | – | – | – | – |
| 2004/05 | 239 | 171 | 68 | – | – | – | – | – | – | – | – |
| 2003/04 | 251 | 182 | 69 | – | – | – | – | – | – | – | – |
| 2002/03 | 262 | 182 | 80 | – | – | – | – | – | – | – | – |
| 2001/02 | 271 | 177 | 94 | – | – | – | – | – | – | – | – |
| 2000/01 | 283 | 178 | 105 | – | – | – | – | – | – | – | – |
| 1999/00 | 291 | 182 | 109 | – | – | – | – | – | – | – | – |
| 1998/99 | 262 | 173 | 89 | – | – | – | – | – | – | – | – |
| 1997/98 | 246 | 172 | 74 | – | – | – | – | – | – | – | – |
| 1996/97 | 251 | 164 | 87 | – | – | – | – | – | – | – | – |
| 1995/96 | 257 | 158 | 99 | – | – | – | – | – | – | – | – |
| 1994/95 | 228 | 151 | 77 | – | – | – | – | – | – | – | – |
| 1993/94 | 230 | 142 | 88 | – | – | – | – | – | – | – | – |