Scoil Iosa
Dublin 24 · Roll number 19577N
- Catholic ethos
- DEIS
- Ordinary with Special Classes
- Pupils in 2025/26
- 109
- +6 on 2024/25
- Over 10 years
- +15%
- Up 14 from 95 in 2015/16
- Girls and boys
- 46 / 63
- 42% girls
Pupils since 1977
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
109 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 | 9 | 8 | 13 | 12 | 9 | 9 | 10.0 |
| Senior Infants | 11 | 9 | 8 | 14 | 12 | 11 | 10.8 |
| 1st Class | 13 | 10 | 8 | 8 | 12 | 13 | 10.7 |
| 2nd Class | 14 | 14 | 10 | 8 | 9 | 17 | 12.0 |
| 3rd Class | 24 | 15 | 14 | 11 | 9 | 9 | 13.7 |
| 4th Class | 8 | 21 | 13 | 15 | 11 | 15 | 13.8 |
| 5th Class | 12 | 8 | 22 | 13 | 16 | 17 | 14.7 |
| 6th Class | 15 | 12 | 8 | 24 | 13 | 18 | 15.0 |
JI and SI are Junior and Senior Infants.
Started Junior Infants in 2024/25
9 in Junior Infants (2024/25), 11 in Senior Infants (2025/26): 2 pupils more.
- 9Junior Infants2024/25
- 11Senior Infants2025/26
Started Junior Infants in 2023/24
12 in Junior Infants (2023/24), 13 in 1st Class (2025/26): 1 pupil more.
- 12Junior Infants2023/24
- 12Senior Infants2024/25
- 131st Class2025/26
Started Junior Infants in 2022/23
13 in Junior Infants (2022/23), 17 in 2nd Class (2025/26): 4 pupils more.
- 13Junior Infants2022/23
- 14Senior Infants2023/24
- 121st Class2024/25
- 172nd Class2025/26
Started Junior Infants in 2021/22
8 in Junior Infants (2021/22), 9 in 3rd Class (2025/26): 1 pupil more.
- 8Junior Infants2021/22
- 8Senior Infants2022/23
- 81st Class2023/24
- 92nd Class2024/25
- 93rd Class2025/26
Started Junior Infants in 2020/21
9 in Junior Infants (2020/21), 15 in 4th Class (2025/26): 6 pupils more.
- 9Junior Infants2020/21
- 9Senior Infants2021/22
- 81st Class2022/23
- 82nd Class2023/24
- 93rd Class2024/25
- 154th Class2025/26
In Senior Infants in 2020/21
11 in Senior Infants (2020/21), 17 in 5th Class (2025/26): 6 pupils more.
- 11Senior Infants2020/21
- 101st Class2021/22
- 102nd Class2022/23
- 113rd Class2023/24
- 114th Class2024/25
- 175th Class2025/26
In 1st Class in 2020/21
13 in 1st Class (2020/21), 18 in 6th Class (2025/26): 5 pupils more.
- 131st Class2020/21
- 142nd Class2021/22
- 143rd Class2022/23
- 154th Class2023/24
- 165th Class2024/25
- 186th Class2025/26
In 2nd Class in 2020/21
14 in 2nd Class (2020/21), 13 in 6th Class (2024/25): 1 pupil fewer.
- 142nd Class2020/21
- 153rd Class2021/22
- 134th Class2022/23
- 135th Class2023/24
- 136th Class2024/25
In 3rd Class in 2020/21
24 in 3rd Class (2020/21), 24 in 6th Class (2023/24): no change.
- 243rd Class2020/21
- 214th Class2021/22
- 225th Class2022/23
- 246th Class2023/24
In 4th Class in 2020/21
8 in 4th Class (2020/21), 8 in 6th Class (2022/23): no change.
- 84th Class2020/21
- 85th Class2021/22
- 86th 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
- +166th Class in 2023/24 (8 to 24)
- −116th Class in 2024/25 (24 to 13)
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 Scoil Iosa, 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
11.1teaching posts
Our estimate: about 11 teachers.
- Class teachersOne for each of the 5 mainstream classes 5
- PrincipalDoesn't teach a class: schools with two or more special classes have a full-time principal 1
- Special education teachers77.5 hours of support teaching a week 3.1
- Special class teachersFor 2 autism classes 2
6.83 special needs assistants (SNAs) also work with pupils. 12 pupils are in special classes, which the class sizes leave out.
The NCSE has allocated 3.3 special education teachers, 2 special class teachers and 6.83 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 Scoil Iosa, measured in a straight line. Pupil numbers are for 2025/26.
| Number on map | School | Distance | Pupils | Since 2015/16 |
|---|---|---|---|---|
| Scoil IosaThis school | – | 109 |
+14.7%
|
|
| 1 | Scoil Aenghusa Jun NS0.4 km · Dublin 24 · DEIS | 0.4 km | 159 |
−37.6%
|
| 2 | S N Aenghusa0.5 km · Dublin 24 · DEIS | 0.5 km | 209 |
+10.6%
|
| 3 | Scoil Carmel1.1 km · Dublin 24 | 1.1 km | 313 |
−30.1%
|
| 4 | St Marys School1.2 km · Dublin 24 | 1.2 km | 349 |
−9.1%
|
| 5 | St Kevins Boys1.3 km · Dublin 24 · Boys | 1.3 km | 275 |
−16.4%
|
| 6 | Scoil Santain1.3 km · Baile Átha Cliath 24 · Gaelscoil · DEIS | 1.3 km | 262 |
−27.4%
|
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
- Oonagh Branniff
- Phone
- 014520800
- [email protected]
- Address
- Tymon Road, Tallaght, Dublin 24, D24 ND34
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
- 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
40 school years from 1977/78 to 2025/26. Class figures start in 2020/21.
| Year | Total | Girls | Boys | JI | SI | 1st | 2nd | 3rd | 4th | 5th | 6th |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025/26 | 109 | 46 | 63 | 9 | 11 | 13 | 17 | 9 | 15 | 17 | 18 |
| 2024/25 | 103 | 51 | 52 | 9 | 12 | 12 | 9 | 9 | 11 | 16 | 13 |
| 2023/24 | 117 | 59 | 58 | 12 | 14 | 8 | 8 | 11 | 15 | 13 | 24 |
| 2022/23 | 108 | 53 | 55 | 13 | 8 | 8 | 10 | 14 | 13 | 22 | 8 |
| 2021/22 | 103 | 51 | 52 | 8 | 9 | 10 | 14 | 15 | 21 | 8 | 12 |
| 2020/21 | 111 | 57 | 54 | 9 | 11 | 13 | 14 | 24 | 8 | 12 | 15 |
| 2019/20 | 119 | 61 | 58 | – | – | – | – | – | – | – | – |
| 2018/19 | 112 | 61 | 51 | – | – | – | – | – | – | – | – |
| 2017/18 | 113 | 61 | 52 | – | – | – | – | – | – | – | – |
| 2016/17 | 104 | 53 | 51 | – | – | – | – | – | – | – | – |
| 2015/16 | 95 | 47 | 48 | – | – | – | – | – | – | – | – |
| 2014/15 | 87 | 38 | 49 | – | – | – | – | – | – | – | – |
| 2013/14 | 79 | 36 | 43 | – | – | – | – | – | – | – | – |
| 2012/13 | 73 | 33 | 40 | – | – | – | – | – | – | – | – |
| 2011/12 | 77 | 37 | 40 | – | – | – | – | – | – | – | – |
| 2010/11 | 82 | 39 | 43 | – | – | – | – | – | – | – | – |
| 2009/10 | 74 | 36 | 38 | – | – | – | – | – | – | – | – |
| 2008/09 | 72 | 33 | 39 | – | – | – | – | – | – | – | – |
| 2007/08 | 76 | 32 | 44 | – | – | – | – | – | – | – | – |
| 2006/07 | 75 | 31 | 44 | – | – | – | – | – | – | – | – |
| 2005/06 | 77 | 32 | 45 | – | – | – | – | – | – | – | – |
| 2004/05 | 81 | 37 | 44 | – | – | – | – | – | – | – | – |
| 2003/04 | 90 | 38 | 52 | – | – | – | – | – | – | – | – |
| 2002/03 | 97 | 42 | 55 | – | – | – | – | – | – | – | – |
| 2001/02 | 104 | 45 | 59 | – | – | – | – | – | – | – | – |
| 2000/01 | 102 | 46 | 56 | – | – | – | – | – | – | – | – |
| 1999/00 | 107 | 48 | 59 | – | – | – | – | – | – | – | – |
| 1998/99 | 129 | 50 | 79 | – | – | – | – | – | – | – | – |
| 1997/98 | 138 | 59 | 79 | – | – | – | – | – | – | – | – |
| 1996/97 | 167 | 69 | 98 | – | – | – | – | – | – | – | – |
| 1995/96 | 190 | 80 | 110 | – | – | – | – | – | – | – | – |
| 1994/95 | 227 | 93 | 134 | – | – | – | – | – | – | – | – |
| 1993/94 | 266 | 115 | 151 | – | – | – | – | – | – | – | – |
| 1983/84 | 520 | 261 | 259 | – | – | – | – | – | – | – | – |
| 1982/83 | 474 | 225 | 249 | – | – | – | – | – | – | – | – |
| 1981/82 | 373 | 177 | 196 | – | – | – | – | – | – | – | – |
| 1980/81 | 286 | 135 | 151 | – | – | – | – | – | – | – | – |
| 1979/80 | 197 | 90 | 107 | – | – | – | – | – | – | – | – |
| 1978/79 | 106 | – | – | – | – | – | – | – | – | – | – |
| 1977/78 | 12 | 6 | 6 | – | – | – | – | – | – | – | – |