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SCOIL NAOMH MEARNOG

Roll number: 10296G Strand Road, Portmarnock, Co. Dublin

School details

Address: Strand Road, Portmarnock, Co. Dublin (D13PF29)
Email: [email protected]
Phone: 018462060
Principal: Sinéad Trimble
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: All-Through School
Planning area: Portmarnock

Class size history

Mainstream class group data is shown separately from standard/year-group enrolment data. The source does not identify which standard/year group each class group belongs to.

Average class size

26.29

2025/26

Mainstream classes

2025/26

Largest class group

2025/26

Classes with 30+ pupils

2025/26

Class group metrics trend

Class group metrics by year

Year	Mainstream class pupils	Mainstream classes	Average class size	Largest class	Classes 30+
2006/07	252	10	25.20	33	3
2007/08	263	10	26.30	35	3
2008/09	274	10	27.40	33	3
2009/10	302	11	27.45	35	4
2010/11	327	12	27.25	35	4
2011/12	344	12	28.67	34	7
2012/13	374	14	26.71	34	5
2013/14	405	15	27.00	33	6
2014/15	451	17	26.53	32	5
2015/16	490	18	27.22	32	5
2016/17	530	20	26.50	31	2
2017/18	565	21	26.90	31	3
2019/20	623	24	25.96	30	3
2020/21	641	24	26.71	30	4
2021/22	658	24	27.42	30	4
2022/23	632	24	26.33	30	1
2023/24	622	24	25.92	30	1
2024/25	616	24	25.67	29	0
2025/26	631	24	26.29	29	0

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 1975/76: 525 in 1974/75 → 804, +279 pupils.
Biggest loss in a single year: 1993/94: 999 in 1983/84 → 592, -407 pupils.
Largest single-class increase: 2nd Class in 2021/22 (69 → 85, +16).
Largest single-class decrease: Senior Infants in 2022/23 (89 → 74, -15).
Largest cohort-step gain: 1st → 2nd in 2021/22 (80 → 85, +5).
Largest cohort-step loss: SI → 1st in 2022/23 (89 → 80, -9).
Overall: 525 (1974/75) → 638 (2025/26), 113.

Summary statistics (class-level data)

Min / max / mean enrolment per class across the available final by-standard years.

Class	Min	Max	Mean	Years
Junior Infants	79	87	81.5	6
Senior Infants	74	89	82.7	6
1st Class	72	88	80.7	6
2nd Class	69	87	78.7	6
3rd Class	69	87	77.7	6
4th Class	70	85	79.3	6
5th Class	66	85	78.8	6
6th Class	64	84	75.2	6
Total	242	1032	558.3	43

Total enrolment over time

Total and gender trends use historical records where available. Class-level data starts in 2020/21.

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 87

SI 2021/22 89

-9

1st 2022/23 80

2nd 2023/24 81

-3

3rd 2024/25 78

4th 2025/26 78

Cohort 2021/22

JI 2021/22 79

-5

SI 2022/23 74

-2

1st 2023/24 72

-1

2nd 2024/25 71

3rd 2025/26 71

Cohort 2022/23

JI 2022/23 81

SI 2023/24 81

1st 2024/25 81

-2

2nd 2025/26 79

Cohort 2023/24

JI 2023/24 80

-1

SI 2024/25 79

1st 2025/26 83

Cohort 2024/25

JI 2024/25 81

SI 2025/26 84

Cohort 2025/26

JI 2025/26 81

Raw data by year

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1974/75	207	318	–	–	–	–	–	–	–	–	525
1975/76	–	–	–	–	–	–	–	–	–	–	804
1976/77	402	521	–	–	–	–	–	–	–	–	923
1977/78	424	563	–	–	–	–	–	–	–	–	987
1978/79	–	–	–	–	–	–	–	–	–	–	1005
1979/80	412	571	–	–	–	–	–	–	–	–	983
1980/81	442	590	–	–	–	–	–	–	–	–	1032
1981/82	438	561	–	–	–	–	–	–	–	–	999
1982/83	446	557	–	–	–	–	–	–	–	–	1003
1983/84	450	549	–	–	–	–	–	–	–	–	999
1993/94	281	311	–	–	–	–	–	–	–	–	592
1994/95	254	279	–	–	–	–	–	–	–	–	533
1995/96	234	262	–	–	–	–	–	–	–	–	496
1996/97	209	249	–	–	–	–	–	–	–	–	458
1997/98	194	230	–	–	–	–	–	–	–	–	424
1998/99	183	222	–	–	–	–	–	–	–	–	405
1999/00	175	205	–	–	–	–	–	–	–	–	380
2000/01	171	173	–	–	–	–	–	–	–	–	344
2001/02	167	157	–	–	–	–	–	–	–	–	324
2002/03	145	130	–	–	–	–	–	–	–	–	275
2003/04	130	128	–	–	–	–	–	–	–	–	258
2004/05	126	116	–	–	–	–	–	–	–	–	242
2005/06	134	121	–	–	–	–	–	–	–	–	255
2006/07	133	128	–	–	–	–	–	–	–	–	261
2007/08	124	147	–	–	–	–	–	–	–	–	271
2008/09	133	150	–	–	–	–	–	–	–	–	283
2009/10	143	166	–	–	–	–	–	–	–	–	309
2010/11	144	192	–	–	–	–	–	–	–	–	336
2011/12	152	199	–	–	–	–	–	–	–	–	351
2012/13	173	208	–	–	–	–	–	–	–	–	381
2013/14	188	224	–	–	–	–	–	–	–	–	412
2014/15	220	238	–	–	–	–	–	–	–	–	458
2015/16	243	254	–	–	–	–	–	–	–	–	497
2016/17	248	289	–	–	–	–	–	–	–	–	537
2017/18	255	317	–	–	–	–	–	–	–	–	572
2018/19	284	335	–	–	–	–	–	–	–	–	619
2019/20	288	342	–	–	–	–	–	–	–	–	630
2020/21	304	344	87	89	80	69	80	83	85	68	648
2021/22	322	343	79	89	88	85	69	80	84	84	665
2022/23	303	336	81	74	80	87	81	70	78	81	639
2023/24	304	325	80	81	72	81	87	80	66	75	629
2024/25	314	309	81	79	81	71	78	85	77	64	623
2025/26	322	316	81	84	83	79	71	78	83	79	638