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

HOLY TRINITY NATIONAL SCHOOL

Roll number: 20190T Glencairn, Leopardstown, Dublin 18

School details

Address
Glencairn, Leopardstown, Dublin 18 (D18YV91)
Email
[email protected]
Phone
012063664
Principal
James Tobin
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
All-Through School
Planning area
Ballinteer_Stepaside_DLR

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 73 82 76.4 5
Senior Infants 70 82 76.2 5
1st Class 71 77 74.2 5
2nd Class 73 82 77.2 5
3rd Class 71 77 74.6 5
4th Class 74 91 78.4 5
5th Class 52 90 74.2 5
6th Class 50 86 71.2 5
Total 586 610 599.7 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 82
0
SI 2021/22 82
-8
1st 2022/23 74
+2
2nd 2023/24 76
+1
3rd 2024/25 77
Cohort 2021/22
JI 2021/22 74
+1
SI 2022/23 75
-4
1st 2023/24 71
+3
2nd 2024/25 74
Cohort 2022/23
JI 2022/23 77
+2
SI 2023/24 79
-2
1st 2024/25 77
Cohort 2023/24
JI 2023/24 76
-6
SI 2024/25 70
Cohort 2024/25
JI 2024/25 73

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
2020/21 268 336 82 75 77 81 71 91 52 75 604
2021/22 270 331 74 82 72 82 76 75 90 50 601
2022/23 290 320 77 75 74 73 77 77 71 86 610
2023/24 274 327 76 79 71 76 72 74 82 71 601
2024/25 274 322 73 70 77 74 77 75 76 74 596
2025/26 (preliminary) 271 315 586