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

ST THOMAS JUNIOR NATIONAL SCHOOL

Roll number: 19542R Newcastle Road, Lucan, Co. Dublin

School details

Address
Newcastle Road, Lucan, Co. Dublin (K78PF57)
Email
[email protected]
Phone
016282691
Principal
Teresa Moynihan
Ethos
Catholic
DEIS
N
Irish classification
No subjects through Irish
Gaeltacht
N
Island
N
Local authority
South Dublin County Council
School patron
Archbishop of Dublin
School type
Ordinary
School level
Junior
Planning area
Lucan

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 123 148 130.4 5
Senior Infants 126 147 134.4 5
1st Class 135 145 140.6 5
2nd Class 139 148 144.6 5
Total 523 573 553.8 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 2020/21 133
+5
SI 2021/22 138
0
1st 2022/23 138
+1
2nd 2023/24 139
-139
3rd 2024/25 0
Cohort 2021/22
JI 2021/22 123
+11
SI 2022/23 134
+1
1st 2023/24 135
+13
2nd 2024/25 148
Cohort 2022/23
JI 2022/23 125
+1
SI 2023/24 126
+19
1st 2024/25 145
Cohort 2023/24
JI 2023/24 123
+4
SI 2024/25 127
Cohort 2024/25
JI 2024/25 148

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
2020/21 288 280 133 147 143 145 568
2021/22 292 256 123 138 142 145 548
2022/23 277 266 125 134 138 146 543
2023/24 252 271 123 126 135 139 523
2024/25 268 300 148 127 145 148 568
2025/26 (preliminary) 263 310 573