Scoil Cnoc Mhuire Sin
Dublin 24 · Roll number 19613O
- Catholic ethos
- DEIS
- Ordinary with Special Classes
- Pupils in 2025/26
- 145
- −1 on 2024/25
- Over 10 years
- −1%
- Down 2 from 147 in 2015/16
- Girls and boys
- 65 / 80
- 45% girls
Pupils since 1978
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
145 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 | 51 | 38 | 34 | 39 | 28 | 36 | 37.7 |
| 4th Class | 45 | 48 | 39 | 35 | 39 | 29 | 39.2 |
| 5th Class | 41 | 46 | 46 | 40 | 34 | 43 | 41.7 |
| 6th Class | 43 | 39 | 51 | 46 | 39 | 37 | 42.5 |
JI and SI are Junior and Senior Infants.
Started Junior Infants in 2020/21
28 in 3rd Class (2024/25), 29 in 4th Class (2025/26): 1 pupil more.
- 283rd Class2024/25
- 294th Class2025/26
In 3rd Class in 2023/24
39 in 3rd Class (2023/24), 43 in 5th Class (2025/26): 4 pupils more.
- 393rd Class2023/24
- 394th Class2024/25
- 435th Class2025/26
In 3rd Class in 2022/23
34 in 3rd Class (2022/23), 37 in 6th Class (2025/26): 3 pupils more.
- 343rd Class2022/23
- 354th Class2023/24
- 345th Class2024/25
- 376th Class2025/26
In 3rd Class in 2021/22
38 in 3rd Class (2021/22), 39 in 6th Class (2024/25): 1 pupil more.
- 383rd Class2021/22
- 394th Class2022/23
- 405th Class2023/24
- 396th Class2024/25
In 3rd Class in 2020/21
51 in 3rd Class (2020/21), 46 in 6th Class (2023/24): 5 pupils fewer.
- 513rd Class2020/21
- 484th Class2021/22
- 465th Class2022/23
- 466th Class2023/24
In 4th Class in 2020/21
45 in 4th Class (2020/21), 51 in 6th Class (2022/23): 6 pupils more.
- 454th Class2020/21
- 465th Class2021/22
- 516th Class2022/23
In 5th Class in 2020/21
41 in 5th Class (2020/21), 39 in 6th Class (2021/22): 2 pupils fewer.
- 415th Class2020/21
- 396th Class2021/22
Biggest one-year changes in a class
- +126th Class in 2022/23 (39 to 51)
- −133rd Class in 2021/22 (51 to 38)
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 Cnoc Mhuire Sin, 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
14teaching posts
Our estimate: about 14 teachers.
- Class teachersOne for each of the 7 mainstream classes 7
- PrincipalDoesn't teach a class: schools with two or more special classes have a full-time principal 1
- Special education teachers100 hours of support teaching a week 4
- Special class teachersFor 2 autism classes 2
10 special needs assistants (SNAs) also work with pupils. 12 pupils are in special classes, which the class sizes leave out.
The NCSE has allocated 4 special education teachers, 2 special class teachers and 11 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 Cnoc Mhuire Sin, measured in a straight line. Pupil numbers are for 2025/26.
| Number on map | School | Distance | Pupils | Since 2015/16 |
|---|---|---|---|---|
| Scoil Cnoc Mhuire SinThis school | – | 145 |
−1.4%
|
|
| 1 | Scoil Cnoc Mhuire Junior0.1 km · Dublin 24 · DEIS | 0.1 km | 141 |
−23.4%
|
| 2 | Scoil Chaitlin Maude0.5 km · Baile Átha Cliath 24 · Gaelscoil · Multi-denominational · DEIS | 0.5 km | 284 |
−9.3%
|
| 3 | An Chroi Ro Naofa Sois0.6 km · Dublin 24 · DEIS | 0.6 km | 167 |
−41.2%
|
| 4 | S N an Croi Ro Naofa0.7 km · Dublin 24 · DEIS | 0.7 km | 213 |
−26.3%
|
| 5 | Tallaght Community National School0.7 km · Dublin 24 · Multi-denominational · DEIS | 0.7 km | 151 |
+57.3%
|
| 6 | St Thomas Senior N S0.8 km · Dublin 24 · DEIS | 0.8 km | 331 |
−25.1%
|
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
- Orla Hanahoe
- Phone
- 014512347
- [email protected]
- Address
- Knockmore Avenue, Tallaght, Dublin 24, D24 TF65
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
- Firhouse–Oldbawn
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
39 school years from 1978/79 to 2025/26. Class figures start in 2020/21.
| Year | Total | Girls | Boys | JI | SI | 1st | 2nd | 3rd | 4th | 5th | 6th |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025/26 | 145 | 65 | 80 | 0 | 0 | 0 | 0 | 36 | 29 | 43 | 37 |
| 2024/25 | 146 | 72 | 74 | – | – | – | – | 28 | 39 | 34 | 39 |
| 2023/24 | 166 | 84 | 82 | – | – | – | – | 39 | 35 | 40 | 46 |
| 2022/23 | 176 | 83 | 93 | – | – | – | – | 34 | 39 | 46 | 51 |
| 2021/22 | 177 | 79 | 98 | – | – | – | – | 38 | 48 | 46 | 39 |
| 2020/21 | 183 | 73 | 110 | – | – | – | – | 51 | 45 | 41 | 43 |
| 2019/20 | 171 | 70 | 101 | – | – | – | – | – | – | – | – |
| 2018/19 | 169 | 73 | 96 | – | – | – | – | – | – | – | – |
| 2017/18 | 176 | 81 | 95 | – | – | – | – | – | – | – | – |
| 2016/17 | 159 | 82 | 77 | – | – | – | – | – | – | – | – |
| 2015/16 | 147 | 77 | 70 | – | – | – | – | – | – | – | – |
| 2014/15 | 137 | 70 | 67 | – | – | – | – | – | – | – | – |
| 2013/14 | 129 | 62 | 67 | – | – | – | – | – | – | – | – |
| 2012/13 | 152 | 70 | 82 | – | – | – | – | – | – | – | – |
| 2011/12 | 155 | 64 | 91 | – | – | – | – | – | – | – | – |
| 2010/11 | 162 | 64 | 98 | – | – | – | – | – | – | – | – |
| 2009/10 | 170 | 65 | 105 | – | – | – | – | – | – | – | – |
| 2008/09 | 150 | 58 | 92 | – | – | – | – | – | – | – | – |
| 2007/08 | 155 | 60 | 95 | – | – | – | – | – | – | – | – |
| 2006/07 | 151 | 58 | 93 | – | – | – | – | – | – | – | – |
| 2005/06 | 149 | 55 | 94 | – | – | – | – | – | – | – | – |
| 2004/05 | 155 | 64 | 91 | – | – | – | – | – | – | – | – |
| 2003/04 | 163 | 70 | 93 | – | – | – | – | – | – | – | – |
| 2002/03 | 185 | 85 | 100 | – | – | – | – | – | – | – | – |
| 2001/02 | 202 | 96 | 106 | – | – | – | – | – | – | – | – |
| 2000/01 | 213 | 94 | 119 | – | – | – | – | – | – | – | – |
| 1999/00 | 224 | 108 | 116 | – | – | – | – | – | – | – | – |
| 1998/99 | 248 | 119 | 129 | – | – | – | – | – | – | – | – |
| 1997/98 | 259 | 122 | 137 | – | – | – | – | – | – | – | – |
| 1996/97 | 272 | 137 | 135 | – | – | – | – | – | – | – | – |
| 1995/96 | 286 | 137 | 149 | – | – | – | – | – | – | – | – |
| 1994/95 | 292 | 138 | 154 | – | – | – | – | – | – | – | – |
| 1993/94 | 331 | 154 | 177 | – | – | – | – | – | – | – | – |
| 1983/84 | 641 | 305 | 336 | – | – | – | – | – | – | – | – |
| 1982/83 | 613 | 303 | 310 | – | – | – | – | – | – | – | – |
| 1981/82 | 387 | 193 | 194 | – | – | – | – | – | – | – | – |
| 1980/81 | 347 | 168 | 179 | – | – | – | – | – | – | – | – |
| 1979/80 | 211 | 96 | 115 | – | – | – | – | – | – | – | – |
| 1978/79 | 53 | – | – | – | – | – | – | – | – | – | – |