S N an Tslanaitheora C
Dundalk · Roll number 19247P
- Catholic ethos
- DEIS
- Ordinary with Special Classes
- Pupils in 2025/26
- 160
- +2 on 2024/25
- Over 10 years
- +60%
- Up 60 from 100 in 2015/16
- Girls and boys
- 146 / 14
- 91% 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
160 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 | 16 | 15 | 10 | 19 | 18 | 30 | 18.0 |
| Senior Infants | 12 | 17 | 18 | 9 | 17 | 29 | 17.0 |
| 1st Class | 15 | 17 | 18 | 16 | 14 | 19 | 16.5 |
| 2nd Class | 11 | 18 | 16 | 15 | 18 | 15 | 15.5 |
| 3rd Class | 19 | 14 | 19 | 14 | 16 | 20 | 17.0 |
| 4th Class | 6 | 17 | 15 | 19 | 14 | 16 | 14.5 |
| 5th Class | 13 | 6 | 22 | 17 | 17 | 14 | 14.8 |
| 6th Class | 18 | 15 | 7 | 21 | 18 | 17 | 16.0 |
JI and SI are Junior and Senior Infants.
Started Junior Infants in 2024/25
18 in Junior Infants (2024/25), 29 in Senior Infants (2025/26): 11 pupils more.
- 18Junior Infants2024/25
- 29Senior Infants2025/26
Started Junior Infants in 2023/24
19 in Junior Infants (2023/24), 19 in 1st Class (2025/26): no change.
- 19Junior Infants2023/24
- 17Senior Infants2024/25
- 191st Class2025/26
Started Junior Infants in 2022/23
10 in Junior Infants (2022/23), 15 in 2nd Class (2025/26): 5 pupils more.
- 10Junior Infants2022/23
- 9Senior Infants2023/24
- 141st Class2024/25
- 152nd Class2025/26
Started Junior Infants in 2021/22
15 in Junior Infants (2021/22), 20 in 3rd Class (2025/26): 5 pupils more.
- 15Junior Infants2021/22
- 18Senior Infants2022/23
- 161st Class2023/24
- 182nd Class2024/25
- 203rd Class2025/26
Started Junior Infants in 2020/21
16 in Junior Infants (2020/21), 16 in 4th Class (2025/26): no change.
- 16Junior Infants2020/21
- 17Senior Infants2021/22
- 181st Class2022/23
- 152nd Class2023/24
- 163rd Class2024/25
- 164th Class2025/26
In Senior Infants in 2020/21
12 in Senior Infants (2020/21), 14 in 5th Class (2025/26): 2 pupils more.
- 12Senior Infants2020/21
- 171st Class2021/22
- 162nd Class2022/23
- 143rd Class2023/24
- 144th Class2024/25
- 145th Class2025/26
In 1st Class in 2020/21
15 in 1st Class (2020/21), 17 in 6th Class (2025/26): 2 pupils more.
- 151st Class2020/21
- 182nd Class2021/22
- 193rd Class2022/23
- 194th Class2023/24
- 175th Class2024/25
- 176th Class2025/26
In 2nd Class in 2020/21
11 in 2nd Class (2020/21), 18 in 6th Class (2024/25): 7 pupils more.
- 112nd Class2020/21
- 143rd Class2021/22
- 154th Class2022/23
- 175th Class2023/24
- 186th Class2024/25
In 3rd Class in 2020/21
19 in 3rd Class (2020/21), 21 in 6th Class (2023/24): 2 pupils more.
- 193rd Class2020/21
- 174th Class2021/22
- 225th Class2022/23
- 216th Class2023/24
In 4th Class in 2020/21
6 in 4th Class (2020/21), 7 in 6th Class (2022/23): 1 pupil more.
- 64th Class2020/21
- 65th Class2021/22
- 76th Class2022/23
In 5th Class in 2020/21
13 in 5th Class (2020/21), 15 in 6th Class (2021/22): 2 pupils more.
- 135th Class2020/21
- 156th Class2021/22
Biggest one-year changes in a class
- +165th Class in 2022/23 (6 to 22)
- −9Senior Infants in 2023/24 (18 to 9)
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 S N an Tslanaitheora C, 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
18.2teaching posts
Our estimate: about 18 teachers.
- Class teachersOne for each of the 8 mainstream classes 8
- PrincipalDoesn't teach a class: schools with two or more special classes have a full-time principal 1
- Deputy principalDoesn't teach a class either, as larger schools and those with five or more special classes have one 1
- Special education teachers80 hours of support teaching a week 3.2
- Special class teachersFor 2 early intervention classes, 2 autism classes and a multiple disabilities class 5
12.64 special needs assistants (SNAs) also work with pupils. 29 pupils are in special classes, which the class sizes leave out.
The NCSE has allocated 3.4 special education teachers, 5 special class teachers and 13.15 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. Where there's no principal bar, the principal also taught a class. 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 S N an Tslanaitheora C, measured in a straight line. Pupil numbers are for 2025/26.
| Number on map | School | Distance | Pupils | Since 2015/16 |
|---|---|---|---|---|
| S N an Tslanaitheora CThis school | – | 160 |
+60.0%
|
|
| 1 | S N an Tslanaitheora B0.0 km · Dundalk · Boys · DEIS | 0.0 km | 169 |
+101.2%
|
| 2 | S N N Maolmhaodhagh B0.7 km · Dundalk · Boys | 0.7 km | 246 |
+22.4%
|
| 3 | S N N Maolmhaodhagh C0.7 km · Dundalk · Girls | 0.7 km | 233 |
+9.9%
|
| 4 | S N N Maolmhaodhagh N0.7 km · Dundalk | 0.7 km | 220 |
−13.0%
|
| 5 | St Nicholas Monastery NS0.8 km · Dundalk · Boys · DEIS | 0.8 km | 164 |
−3.0%
|
| 6 | Castletown RD Convent0.8 km · Dundalk · Girls · DEIS | 0.8 km | 191 |
+16.5%
|
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
- Patrick O'Rourke
- Phone
- 0429331975
- [email protected]
- Address
- Ard Easmuinn Road, Dundalk, Co. Louth, A91 EC82
School
- Ethos
- Catholic
- Patron
- Archbishop of Armagh
- 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
- Louth County Council
- Planning area
- Dundalk
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
43 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 | 160 | 146 | 14 | 30 | 29 | 19 | 15 | 20 | 16 | 14 | 17 |
| 2024/25 | 158 | 144 | 14 | 18 | 17 | 14 | 18 | 16 | 14 | 17 | 18 |
| 2023/24 | 136 | 131 | 5 | 19 | 9 | 16 | 15 | 14 | 19 | 17 | 21 |
| 2022/23 | 131 | 126 | 5 | 10 | 18 | 18 | 16 | 19 | 15 | 22 | 7 |
| 2021/22 | 125 | 120 | 5 | 15 | 17 | 17 | 18 | 14 | 17 | 6 | 15 |
| 2020/21 | 116 | 111 | 5 | 16 | 12 | 15 | 11 | 19 | 6 | 13 | 18 |
| 2019/20 | 99 | 94 | 5 | – | – | – | – | – | – | – | – |
| 2018/19 | 101 | 97 | 4 | – | – | – | – | – | – | – | – |
| 2017/18 | 98 | 94 | 4 | – | – | – | – | – | – | – | – |
| 2016/17 | 98 | 94 | 4 | – | – | – | – | – | – | – | – |
| 2015/16 | 100 | 98 | 2 | – | – | – | – | – | – | – | – |
| 2014/15 | 102 | 100 | 2 | – | – | – | – | – | – | – | – |
| 2013/14 | 104 | 102 | 2 | – | – | – | – | – | – | – | – |
| 2012/13 | 105 | 104 | 1 | – | – | – | – | – | – | – | – |
| 2011/12 | 114 | 113 | 1 | – | – | – | – | – | – | – | – |
| 2010/11 | 131 | 130 | 1 | – | – | – | – | – | – | – | – |
| 2009/10 | 139 | 138 | 1 | – | – | – | – | – | – | – | – |
| 2008/09 | 170 | 169 | 1 | – | – | – | – | – | – | – | – |
| 2007/08 | 160 | 159 | 1 | – | – | – | – | – | – | – | – |
| 2006/07 | 166 | 165 | 1 | – | – | – | – | – | – | – | – |
| 2005/06 | 165 | 164 | 1 | – | – | – | – | – | – | – | – |
| 2004/05 | 150 | 148 | 2 | – | – | – | – | – | – | – | – |
| 2003/04 | 144 | 143 | 1 | – | – | – | – | – | – | – | – |
| 2002/03 | 150 | 149 | 1 | – | – | – | – | – | – | – | – |
| 2001/02 | 149 | 149 | 0 | – | – | – | – | – | – | – | – |
| 2000/01 | 152 | 152 | 0 | – | – | – | – | – | – | – | – |
| 1999/00 | 146 | 146 | 0 | – | – | – | – | – | – | – | – |
| 1998/99 | 149 | 149 | 0 | – | – | – | – | – | – | – | – |
| 1997/98 | 142 | 142 | 0 | – | – | – | – | – | – | – | – |
| 1996/97 | 155 | 155 | 0 | – | – | – | – | – | – | – | – |
| 1995/96 | 171 | 171 | – | – | – | – | – | – | – | – | – |
| 1994/95 | 187 | 187 | – | – | – | – | – | – | – | – | – |
| 1993/94 | 194 | 194 | – | – | – | – | – | – | – | – | – |
| 1983/84 | 439 | 439 | 0 | – | – | – | – | – | – | – | – |
| 1982/83 | 465 | 465 | 0 | – | – | – | – | – | – | – | – |
| 1981/82 | 483 | 483 | 0 | – | – | – | – | – | – | – | – |
| 1980/81 | 518 | 518 | 0 | – | – | – | – | – | – | – | – |
| 1979/80 | 541 | 541 | 0 | – | – | – | – | – | – | – | – |
| 1978/79 | 555 | 555 | 0 | – | – | – | – | – | – | – | – |
| 1977/78 | 537 | 537 | 0 | – | – | – | – | – | – | – | – |
| 1976/77 | 549 | 549 | 0 | – | – | – | – | – | – | – | – |
| 1975/76 | 504 | – | – | – | – | – | – | – | – | – | – |
| 1974/75 | 488 | 488 | 0 | – | – | – | – | – | – | – | – |