By area · Release notes. Enrolment by planning area, local authority, school patron, county.

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

Preliminary data

The latest year shown (2025/26) is preliminary and subject to revision when the official enrolment figures are released by the Department of Education.

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 2021/22: 342 in 2020/21 → 352, +10 pupils.
Biggest loss in a single year: 2023/24: 360 in 2022/23 → 353, -7 pupils.
Largest single-class increase: 6th Class in 2021/22 (32 → 44, +12).
Largest single-class decrease: Senior Infants in 2025/26 (preliminary) (46 → 0, -46).
Largest cohort-step gain: JI → SI in 2024/25 (42 → 46, +4).
Largest cohort-step loss: 3rd → 4th in 2024/25 (46 → 44, -2).
Overall: 342 (2020/21) → 360 (2025/26 (preliminary)), 18.

Summary statistics (class-level data)

Min / max / mean enrolment per class across the available years (2020/21–2024/25; preliminary year excluded from class stats).

Class	Min	Max	Mean	Years
Junior Infants	40	47	42.6	5
Senior Infants	41	46	43.8	5
1st Class	42	45	43.4	5
2nd Class	41	45	44.0	5
3rd Class	34	46	42.4	5
4th Class	38	49	43.8	5
5th Class	41	47	43.6	5
6th Class	32	46	41.0	5
Total	342	360	354.3	6

Total enrolment over time

Enrolment by gender over time

Enrolment by class over time

Cohort progression

Base cohort:

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

2nd 2023/24 45

3rd 2024/25 45

Cohort 2021/22

JI 2021/22 40

SI 2022/23 43

1st 2023/24 44

2nd 2024/25 45

Cohort 2022/23

JI 2022/23 43

SI 2023/24 43

1st 2024/25 43

Cohort 2023/24

JI 2023/24 42

SI 2024/25 46

Cohort 2024/25

JI 2024/25 41

Raw data by year

Years marked (preliminary) are subject to revision when official data are published.

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
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 (preliminary)	–	360	–	–	–	–	–	–	–	–	360