By area · Release notes. Enrolment by planning area, local authority, school patron, county.
HAROLD BOYS N S
Roll number: 15132B
St. Patrick's Road, Dalkey, Co. Dublin
School details
- Address
- St. Patrick's Road, Dalkey, Co. Dublin (A96PY94)
- Principal
- Teresa Buckley
- Ethos
- Catholic
- DEIS
- N
- Irish classification
- No subjects through Irish
- Gaeltacht
- N
- Island
- N
- Local authority
- Dun Laoghaire Rathdown
- School patron
- Archbishop of Dublin
- School type
- Ordinary
- School level
- Senior
- Planning area
- Dunlaoghaire
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: 120 in 2022/23 → 125, +5 pupils.
- Biggest loss in a single year: 2024/25: 125 in 2023/24 → 113, -12 pupils.
- Largest single-class increase: 6th Class in 2023/24 (22 → 30, +8).
- Largest single-class decrease: 5th Class in 2025/26 (preliminary) (26 → 0, -26).
- Largest cohort-step gain: 4th → 5th in 2023/24 (20 → 21, +1).
- Largest cohort-step loss: 5th → 6th in 2022/23 (25 → 22, -3).
- Overall: 125 (2020/21) → 106 (2025/26 (preliminary)), -19.
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 |
| 2nd Class |
19 |
25 |
22.6 |
5 |
| 3rd Class |
20 |
30 |
24.6 |
5 |
| 4th Class |
20 |
29 |
24.4 |
5 |
| 5th Class |
21 |
29 |
25.6 |
5 |
| 6th Class |
21 |
30 |
23.8 |
5 |
| Total |
106 |
125 |
118.5 |
6 |
Total enrolment over time
Enrolment by gender over time
Enrolment by class over time
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 |
– |
125 |
– |
– |
– |
21 |
30 |
25 |
27 |
22 |
125 |
| 2021/22 |
– |
122 |
– |
– |
– |
24 |
20 |
29 |
25 |
24 |
122 |
| 2022/23 |
– |
120 |
– |
– |
– |
24 |
25 |
20 |
29 |
22 |
120 |
| 2023/24 |
– |
125 |
– |
– |
– |
25 |
23 |
26 |
21 |
30 |
125 |
| 2024/25 |
– |
113 |
– |
– |
– |
19 |
25 |
22 |
26 |
21 |
113 |
| 2025/26 (preliminary) |
– |
106 |
– |
– |
– |
– |
– |
– |
– |
– |
106 |