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

KILL-O'-THE-GRANGE NS

Roll number: 18886V Deansgrange, Blackrock, Co. Dublin

School details

Address: Deansgrange, Blackrock, Co. Dublin (A94X225)
Email: [email protected]
Phone: 012894578
Principal: Hilary McBain
Ethos: Church Of Ireland
DEIS: N
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: Dun Laoghaire Rathdown
School patron: Archbishop of Dublin & Bishop of Glendalough COI
School type: Ordinary with Special Classes
School level: All-Through School
Planning area: Sallynoggin_Killiney_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.

Biggest gain in a single year: 2022/23: 212 in 2021/22 → 213, +1 pupils.
Biggest loss in a single year: 2021/22: 219 in 2020/21 → 212, -7 pupils.
Largest single-class increase: 2nd Class in 2021/22 (26 → 30, +4).
Largest single-class decrease: 5th Class in 2025/26 (preliminary) (29 → 0, -29).
Largest cohort-step gain: 1st → 2nd in 2022/23 (23 → 26, +3).
Largest cohort-step loss: SI → 1st in 2021/22 (27 → 23, -4).
Overall: 219 (2020/21) → 208 (2025/26 (preliminary)), -11.

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	21	25	23.6	5
Senior Infants	22	27	25.0	5
1st Class	23	29	26.0	5
2nd Class	25	30	27.0	5
3rd Class	25	30	27.4	5
4th Class	26	30	27.8	5
5th Class	26	29	27.8	5
6th Class	26	29	27.4	5
Total	208	219	212.3	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 25

SI 2021/22 25

1st 2022/23 27

-2

2nd 2023/24 25

3rd 2024/25 25

Cohort 2021/22

JI 2021/22 25

SI 2022/23 26

1st 2023/24 27

2nd 2024/25 28

Cohort 2022/23

JI 2022/23 22

SI 2023/24 22

1st 2024/25 24

Cohort 2023/24

JI 2023/24 25

SI 2024/25 25

Cohort 2024/25

JI 2024/25 21

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	107	112	25	27	29	26	29	28	28	27	219
2021/22	106	106	25	25	23	30	26	28	26	29	212
2022/23	108	105	22	26	27	26	30	27	29	26	213
2023/24	113	101	25	22	27	25	27	30	27	28	214
2024/25	112	96	21	25	24	28	25	26	29	27	208
2025/26 (preliminary)	110	98	–	–	–	–	–	–	–	–	208