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MOUNT SION CBS N S

Roll number: 19947U Barrack Street, Waterford

School details

Address
Barrack Street, Waterford (X91NF77)
Email
[email protected]
Phone
051377947
Principal
Michael Walsh
Ethos
Catholic
DEIS
Y
Irish classification
No subjects through Irish
Gaeltacht
N
Island
N
Local authority
Waterford City Council
School patron
Bishop of Waterford & Lismore
School type
Ordinary with Special Classes
School level
All-Through School
Planning area
Waterford

Class size history

Mainstream class group data is shown separately from standard/year-group enrolment data. The source does not identify which standard/year group each class group belongs to.

Average class size
21.38
2025/26
Mainstream classes
16
2025/26
Largest class group
23
2025/26
Classes with 30+ pupils
0
2025/26

Class group metrics trend

Class group metrics by year

Year Mainstream class pupils Mainstream classes Average class size Largest class Classes 30+
2006/07 324 13 24.92 36 2
2007/08 329 14 23.50 30 1
2008/09 337 14 24.07 30 1
2009/10 339 13 26.08 33 3
2010/11 312 14 22.29 27 0
2011/12 313 13 24.08 36 1
2012/13 315 13 24.23 32 1
2013/14 290 12 24.17 34 2
2014/15 288 12 24.00 34 3
2015/16 295 12 24.58 32 2
2016/17 304 12 25.33 32 3
2017/18 321 14 22.93 30 1
2019/20 316 17 18.59 25 0
2020/21 330 16 20.62 25 0
2021/22 341 16 21.31 25 0
2022/23 348 16 21.75 24 0
2023/24 341 16 21.31 23 0
2024/25 341 16 21.31 23 0
2025/26 342 16 21.38 23 0

Data highlights

Key numbers to spot outliers or notable changes.

Summary statistics (class-level data)

Min / max / mean enrolment per class across the available final by-standard years.

Class Min Max Mean Years
Junior Infants 40 47 42.8 6
Senior Infants 41 46 43.8 6
1st Class 42 45 43.5 6
2nd Class 41 45 44.0 6
3rd Class 34 46 42.8 6
4th Class 38 49 44.0 6
5th Class 41 47 44.2 6
6th Class 32 47 42.0 6
Total 288 452 344.6 33

Total enrolment over time

Total and gender trends use historical records where available. Class-level data starts in 2020/21.

Enrolment by gender over time

Enrolment by class over time

Cohort progression

Track how each cohort (pupils who were in the same class in the same year) progresses through the school. Each step shows the count; the number between steps is the net change (pupils gained minus pupils lost).

Cohort 2020/21
JI 2020/21 47
-1
SI 2021/22 46
-1
1st 2022/23 45
0
2nd 2023/24 45
0
3rd 2024/25 45
0
4th 2025/26 45
Cohort 2021/22
JI 2021/22 40
+3
SI 2022/23 43
+1
1st 2023/24 44
+1
2nd 2024/25 45
0
3rd 2025/26 45
Cohort 2022/23
JI 2022/23 43
0
SI 2023/24 43
0
1st 2024/25 43
+1
2nd 2025/26 44
Cohort 2023/24
JI 2023/24 42
+4
SI 2024/25 46
-2
1st 2025/26 44
Cohort 2024/25
JI 2024/25 41
+3
SI 2025/26 44
Cohort 2025/26
JI 2025/26 44

Raw data by year

Year Female Male JI SI 1st 2nd 3rd 4th 5th 6th Total
1993/94 – 452 – – – – – – – – 452
1994/95 – 443 – – – – – – – – 443
1995/96 – 442 – – – – – – – – 442
1996/97 – 407 – – – – – – – – 407
1997/98 – 383 – – – – – – – – 383
1998/99 – 354 – – – – – – – – 354
1999/00 – 332 – – – – – – – – 332
2000/01 – 331 – – – – – – – – 331
2001/02 – 328 – – – – – – – – 328
2002/03 – 329 – – – – – – – – 329
2003/04 – 310 – – – – – – – – 310
2004/05 – 296 – – – – – – – – 296
2005/06 – 336 – – – – – – – – 336
2006/07 – 342 – – – – – – – – 342
2007/08 – 342 – – – – – – – – 342
2008/09 – 346 – – – – – – – – 346
2009/10 – 349 – – – – – – – – 349
2010/11 – 323 – – – – – – – – 323
2011/12 – 313 – – – – – – – – 313
2012/13 – 315 – – – – – – – – 315
2013/14 – 290 – – – – – – – – 290
2014/15 – 288 – – – – – – – – 288
2015/16 – 295 – – – – – – – – 295
2016/17 – 304 – – – – – – – – 304
2017/18 – 326 – – – – – – – – 326
2018/19 – 341 – – – – – – – – 341
2019/20 – 328 – – – – – – – – 328
2020/21 – 342 47 41 43 41 34 49 43 32 342
2021/22 – 352 40 46 42 44 42 38 47 44 352
2022/23 – 360 43 43 45 45 45 43 41 46 360
2023/24 – 353 42 43 44 45 46 45 41 41 353
2024/25 – 359 41 46 43 45 45 44 46 42 359
2025/26 – 360 44 44 44 44 45 45 47 47 360