S N an Cillin
Birr · Roll number 17179O
- Catholic ethos
- DEIS
- Pupils in 2025/26
- 140
- +4 on 2024/25
- Over 10 years
- +32%
- Up 34 from 106 in 2015/16
- Girls and boys
- 66 / 74
- 47% 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
140 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 | 19 | 15 | 8 | 19 | 23 | 16 | 16.7 |
| Senior Infants | 16 | 20 | 15 | 11 | 20 | 25 | 17.8 |
| 1st Class | 14 | 14 | 19 | 14 | 10 | 20 | 15.2 |
| 2nd Class | 10 | 14 | 14 | 20 | 16 | 10 | 14.0 |
| 3rd Class | 12 | 10 | 14 | 15 | 20 | 17 | 14.7 |
| 4th Class | 15 | 12 | 11 | 14 | 16 | 20 | 14.7 |
| 5th Class | 20 | 15 | 11 | 13 | 17 | 14 | 15.0 |
| 6th Class | 11 | 20 | 16 | 11 | 14 | 18 | 15.0 |
JI and SI are Junior and Senior Infants.
Started Junior Infants in 2024/25
23 in Junior Infants (2024/25), 25 in Senior Infants (2025/26): 2 pupils more.
- 23Junior Infants2024/25
- 25Senior Infants2025/26
Started Junior Infants in 2023/24
19 in Junior Infants (2023/24), 20 in 1st Class (2025/26): 1 pupil more.
- 19Junior Infants2023/24
- 20Senior Infants2024/25
- 201st Class2025/26
Started Junior Infants in 2022/23
8 in Junior Infants (2022/23), 10 in 2nd Class (2025/26): 2 pupils more.
- 8Junior Infants2022/23
- 11Senior Infants2023/24
- 101st Class2024/25
- 102nd Class2025/26
Started Junior Infants in 2021/22
15 in Junior Infants (2021/22), 17 in 3rd Class (2025/26): 2 pupils more.
- 15Junior Infants2021/22
- 15Senior Infants2022/23
- 141st Class2023/24
- 162nd Class2024/25
- 173rd Class2025/26
Started Junior Infants in 2020/21
19 in Junior Infants (2020/21), 20 in 4th Class (2025/26): 1 pupil more.
- 19Junior Infants2020/21
- 20Senior Infants2021/22
- 191st Class2022/23
- 202nd Class2023/24
- 203rd Class2024/25
- 204th Class2025/26
In Senior Infants in 2020/21
16 in Senior Infants (2020/21), 14 in 5th Class (2025/26): 2 pupils fewer.
- 16Senior Infants2020/21
- 141st Class2021/22
- 142nd Class2022/23
- 153rd Class2023/24
- 164th Class2024/25
- 145th Class2025/26
In 1st Class in 2020/21
14 in 1st Class (2020/21), 18 in 6th Class (2025/26): 4 pupils more.
- 141st Class2020/21
- 142nd Class2021/22
- 143rd Class2022/23
- 144th Class2023/24
- 175th Class2024/25
- 186th Class2025/26
In 2nd Class in 2020/21
10 in 2nd Class (2020/21), 14 in 6th Class (2024/25): 4 pupils more.
- 102nd Class2020/21
- 103rd Class2021/22
- 114th Class2022/23
- 135th Class2023/24
- 146th Class2024/25
In 3rd Class in 2020/21
12 in 3rd Class (2020/21), 11 in 6th Class (2023/24): 1 pupil fewer.
- 123rd Class2020/21
- 124th Class2021/22
- 115th Class2022/23
- 116th Class2023/24
In 4th Class in 2020/21
15 in 4th Class (2020/21), 16 in 6th Class (2022/23): 1 pupil more.
- 154th Class2020/21
- 155th Class2021/22
- 166th Class2022/23
In 5th Class in 2020/21
20 in 5th Class (2020/21), 20 in 6th Class (2021/22): no change.
- 205th Class2020/21
- 206th Class2021/22
Biggest one-year changes in a class
- +11Junior Infants in 2023/24 (8 to 19)
- −7Junior Infants in 2022/23 (15 to 8)
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 Cillin, 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
8.1teaching posts
Our estimate: about 8 teachers.
- Class teachersOne for each of the 6 mainstream classes 6
- PrincipalAlso teaches one of the classes, so is counted with the class teachers in a class
- Special education teachers52.5 hours of support teaching a week 2.1
1.33 special needs assistants (SNAs) also work with pupils.
The NCSE has allocated 2.1 special education teachers and 1.33 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. 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 Cillin, measured in a straight line. Pupil numbers are for 2025/26.
| Number on map | School | Distance | Pupils | Since 2015/16 |
|---|---|---|---|---|
| S N an CillinThis school | – | 140 |
+32.1%
|
|
| 1 | St Brendans Monastery1.8 km · Birr · Boys · DEIS | 1.8 km | 178 |
−18.7%
|
| 2 | Mercy Primary School2.0 km · Birr · Girls · DEIS | 2.0 km | 141 |
−18.5%
|
| 3 | S N Osmann2.0 km · Birr · Church of Ireland · DEIS | 2.0 km | 86 |
−1.1%
|
| 4 | Gaelscoil na Laochra2.7 km · Birr · Gaelscoil · Multi-denominational | 2.7 km | 45 |
+114.3%
|
| 5 | Croinchoill N S3.0 km · Birr · DEIS | 3.0 km | 243 |
+19.1%
|
| 6 | Carrig N S3.6 km · Birr | 3.6 km | 60 |
−21.1%
|
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
- Jessica Whelahan
- Phone
- 0579121682
- [email protected]
- Address
- Birr, Co Offaly, R42 AK00
School
- Ethos
- Catholic
- Patron
- Bishop of Killaloe
- School type
- Ordinary
- 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
- Tipperary (Nr) County Council
- Planning area
- Birr
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 | 140 | 66 | 74 | 16 | 25 | 20 | 10 | 17 | 20 | 14 | 18 |
| 2024/25 | 136 | 58 | 78 | 23 | 20 | 10 | 16 | 20 | 16 | 17 | 14 |
| 2023/24 | 117 | 47 | 70 | 19 | 11 | 14 | 20 | 15 | 14 | 13 | 11 |
| 2022/23 | 108 | 44 | 64 | 8 | 15 | 19 | 14 | 14 | 11 | 11 | 16 |
| 2021/22 | 120 | 60 | 60 | 15 | 20 | 14 | 14 | 10 | 12 | 15 | 20 |
| 2020/21 | 117 | 62 | 55 | 19 | 16 | 14 | 10 | 12 | 15 | 20 | 11 |
| 2019/20 | 118 | 65 | 53 | – | – | – | – | – | – | – | – |
| 2018/19 | 109 | 59 | 50 | – | – | – | – | – | – | – | – |
| 2017/18 | 105 | 59 | 46 | – | – | – | – | – | – | – | – |
| 2016/17 | 102 | 59 | 43 | – | – | – | – | – | – | – | – |
| 2015/16 | 106 | 63 | 43 | – | – | – | – | – | – | – | – |
| 2014/15 | 104 | 65 | 39 | – | – | – | – | – | – | – | – |
| 2013/14 | 95 | 55 | 40 | – | – | – | – | – | – | – | – |
| 2012/13 | 99 | 56 | 43 | – | – | – | – | – | – | – | – |
| 2011/12 | 89 | 54 | 35 | – | – | – | – | – | – | – | – |
| 2010/11 | 93 | 54 | 39 | – | – | – | – | – | – | – | – |
| 2009/10 | 97 | 54 | 43 | – | – | – | – | – | – | – | – |
| 2008/09 | 105 | 61 | 44 | – | – | – | – | – | – | – | – |
| 2007/08 | 99 | 55 | 44 | – | – | – | – | – | – | – | – |
| 2006/07 | 90 | 49 | 41 | – | – | – | – | – | – | – | – |
| 2005/06 | 92 | 49 | 43 | – | – | – | – | – | – | – | – |
| 2004/05 | 90 | 48 | 42 | – | – | – | – | – | – | – | – |
| 2003/04 | 82 | 41 | 41 | – | – | – | – | – | – | – | – |
| 2002/03 | 77 | 35 | 42 | – | – | – | – | – | – | – | – |
| 2001/02 | 74 | 34 | 40 | – | – | – | – | – | – | – | – |
| 2000/01 | 58 | 23 | 35 | – | – | – | – | – | – | – | – |
| 1999/00 | 48 | 22 | 26 | – | – | – | – | – | – | – | – |
| 1998/99 | 44 | 19 | 25 | – | – | – | – | – | – | – | – |
| 1997/98 | 37 | 17 | 20 | – | – | – | – | – | – | – | – |
| 1996/97 | 44 | 18 | 26 | – | – | – | – | – | – | – | – |
| 1995/96 | 47 | 20 | 27 | – | – | – | – | – | – | – | – |
| 1994/95 | 40 | 17 | 23 | – | – | – | – | – | – | – | – |
| 1993/94 | 38 | 15 | 23 | – | – | – | – | – | – | – | – |
| 1983/84 | 52 | 24 | 28 | – | – | – | – | – | – | – | – |
| 1982/83 | 49 | 23 | 26 | – | – | – | – | – | – | – | – |
| 1981/82 | 49 | 22 | 27 | – | – | – | – | – | – | – | – |
| 1980/81 | 38 | 16 | 22 | – | – | – | – | – | – | – | – |
| 1979/80 | 37 | 15 | 22 | – | – | – | – | – | – | – | – |
| 1978/79 | 34 | – | 24 | – | – | – | – | – | – | – | – |
| 1977/78 | 29 | 9 | 20 | – | – | – | – | – | – | – | – |
| 1976/77 | 30 | 10 | 20 | – | – | – | – | – | – | – | – |
| 1974/75 | 33 | 12 | 21 | – | – | – | – | – | – | – | – |