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

ST HELENS JUNIOR N S

Roll number: 19578P Martello, Portmarnock, Co. Dublin

School details

Address
Martello, Portmarnock, Co. Dublin (D13KP93)
Email
[email protected]
Phone
018461763
Principal
Lorna M Lavin
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 with Special Classes
School level
Junior
Planning area
Portmarnock

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.

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 62 80 72.0 5
Senior Infants 69 83 75.8 5
1st Class 75 86 80.0 5
2nd Class 75 90 82.6 5
Total 314 336 326.8 6

Total enrolment over time

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 75
-1
SI 2021/22 74
+1
1st 2022/23 75
0
2nd 2023/24 75
-75
3rd 2024/25 0
Cohort 2021/22
JI 2021/22 67
+4
SI 2022/23 71
+5
1st 2023/24 76
+9
2nd 2024/25 85
Cohort 2022/23
JI 2022/23 80
+3
SI 2023/24 83
-1
1st 2024/25 82
Cohort 2023/24
JI 2023/24 62
+7
SI 2024/25 69
Cohort 2024/25
JI 2024/25 76

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
2020/21 156 180 75 82 81 80 336
2021/22 160 168 67 74 86 83 328
2022/23 166 168 80 71 75 90 334
2023/24 156 158 62 83 76 75 314
2024/25 177 153 76 69 82 85 330
2025/26 (preliminary) 171 148 319