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

BLESSED OLIVER N S

Roll number: 17569E Balrothery, Balbriggan, Co. Dublin

School details

Address: Balrothery, Balbriggan, Co. Dublin (K32WR94)
Email: [email protected]
Phone: 018411494
Principal: Mairéad Murphy
Ethos: Catholic
DEIS: N
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: Fingal County Council
School patron: Archbishop of Dublin
School type: Ordinary
School level: All-Through School
Planning area: Balbriggan

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: 2023/24: 317 in 2022/23 → 318, +1 pupils.
Biggest loss in a single year: 2024/25: 318 in 2023/24 → 307, -11 pupils.
Largest single-class increase: 6th Class in 2022/23 (40 → 46, +6).
Largest single-class decrease: 3rd Class in 2025/26 (preliminary) (43 → 0, -43).
Largest cohort-step gain: 1st → 2nd in 2023/24 (39 → 42, +3).
Largest cohort-step loss: SI → 1st in 2022/23 (42 → 39, -3).
Overall: 329 (2020/21) → 298 (2025/26 (preliminary)), -31.

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	33	43	37.0	5
Senior Infants	32	42	37.4	5
1st Class	34	39	37.4	5
2nd Class	33	42	38.2	5
3rd Class	40	43	40.8	5
4th Class	40	45	41.2	5
5th Class	38	47	42.4	5
6th Class	40	46	43.6	5
Total	298	329	314.7	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 43

-1

SI 2021/22 42

-3

1st 2022/23 39

2nd 2023/24 42

3rd 2024/25 43

Cohort 2021/22

JI 2021/22 33

-1

SI 2022/23 32

1st 2023/24 34

-1

2nd 2024/25 33

Cohort 2022/23

JI 2022/23 38

-1

SI 2023/24 37

1st 2024/25 37

Cohort 2023/24

JI 2023/24 37

SI 2024/25 39

Cohort 2024/25

JI 2024/25 34

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	171	158	43	37	39	38	40	45	42	45	329
2021/22	159	160	33	42	38	38	40	41	47	40	319
2022/23	157	160	38	32	39	40	40	40	42	46	317
2023/24	156	162	37	37	34	42	41	40	43	44	318
2024/25	142	165	34	39	37	33	43	40	38	43	307
2025/26 (preliminary)	138	160	–	–	–	–	–	–	–	–	298