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ST PIUS X N S BOYS

Roll number: 19177U Fortfield Park, Terenure, Dublin 6

School details

Address: Fortfield Park, Terenure, Dublin 6 (D6WHP92)
Email: [email protected]
Phone: 014903057
Principal: Lorcan Coyle
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: All-Through School
Planning area: Dublin_6w

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

25.55

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	505	16	31.56	35	14
2007/08	494	16	30.88	35	13
2008/09	495	17	29.12	34	9
2009/10	501	17	29.47	32	11
2010/11	497	17	29.24	32	11
2011/12	492	17	28.94	32	11
2012/13	524	18	29.11	32	9
2013/14	520	18	28.89	31	9
2014/15	515	18	28.61	32	9
2015/16	529	18	29.39	32	12
2016/17	533	18	29.61	32	10
2017/18	534	18	29.67	32	11
2019/20	542	19	28.53	32	8
2020/21	519	19	27.32	32	8
2021/22	531	20	26.55	31	4
2022/23	529	20	26.45	31	2
2023/24	519	20	25.95	30	1
2024/25	509	20	25.45	30	1
2025/26	511	20	25.55	29	0

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 2006/07: 473 in 2005/06 → 505, +32 pupils.
Biggest loss in a single year: 1993/94: 580 in 1982/83 → 514, -66 pupils.
Largest single-class increase: Senior Infants in 2025/26 (50 → 73, +23).
Largest single-class decrease: Senior Infants in 2023/24 (78 → 54, -24).
Largest cohort-step gain: 4th → 5th in 2022/23 (73 → 76, +3).
Largest cohort-step loss: 2nd → 3rd in 2024/25 (70 → 68, -2).
Overall: 564 (1974/75) → 511 (2025/26), -53.

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	51	77	62.7	6
Senior Infants	50	78	66.2	6
1st Class	52	77	64.2	6
2nd Class	54	76	64.7	6
3rd Class	58	77	68.3	6
4th Class	57	75	65.7	6
5th Class	58	76	65.3	6
6th Class	57	77	62.7	6
Total	463	580	515.1	42

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 70

-1

SI 2021/22 69

1st 2022/23 70

2nd 2023/24 70

-2

3rd 2024/25 68

4th 2025/26 69

Cohort 2021/22

JI 2021/22 77

SI 2022/23 78

-1

1st 2023/24 77

-1

2nd 2024/25 76

3rd 2025/26 77

Cohort 2022/23

JI 2022/23 54

SI 2023/24 54

-1

1st 2024/25 53

2nd 2025/26 54

Cohort 2023/24

JI 2023/24 51

-1

SI 2024/25 50

1st 2025/26 52

Cohort 2024/25

JI 2024/25 71

SI 2025/26 73

Cohort 2025/26

JI 2025/26 53

Raw data by year

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1974/75	–	564	–	–	–	–	–	–	–	–	564
1975/76	–	–	–	–	–	–	–	–	–	–	519
1976/77	–	518	–	–	–	–	–	–	–	–	518
1977/78	–	541	–	–	–	–	–	–	–	–	541
1978/79	–	564	–	–	–	–	–	–	–	–	564
1979/80	–	561	–	–	–	–	–	–	–	–	561
1980/81	–	572	–	–	–	–	–	–	–	–	572
1981/82	–	564	–	–	–	–	–	–	–	–	564
1982/83	–	580	–	–	–	–	–	–	–	–	580
1993/94	–	514	–	–	–	–	–	–	–	–	514
1994/95	–	503	–	–	–	–	–	–	–	–	503
1995/96	–	505	–	–	–	–	–	–	–	–	505
1996/97	–	488	–	–	–	–	–	–	–	–	488
1997/98	–	481	–	–	–	–	–	–	–	–	481
1998/99	–	478	–	–	–	–	–	–	–	–	478
1999/00	–	481	–	–	–	–	–	–	–	–	481
2000/01	–	487	–	–	–	–	–	–	–	–	487
2001/02	–	486	–	–	–	–	–	–	–	–	486
2002/03	–	482	–	–	–	–	–	–	–	–	482
2003/04	–	463	–	–	–	–	–	–	–	–	463
2004/05	–	477	–	–	–	–	–	–	–	–	477
2005/06	–	473	–	–	–	–	–	–	–	–	473
2006/07	–	505	–	–	–	–	–	–	–	–	505
2007/08	–	494	–	–	–	–	–	–	–	–	494
2008/09	–	495	–	–	–	–	–	–	–	–	495
2009/10	–	501	–	–	–	–	–	–	–	–	501
2010/11	–	497	–	–	–	–	–	–	–	–	497
2011/12	–	492	–	–	–	–	–	–	–	–	492
2012/13	–	524	–	–	–	–	–	–	–	–	524
2013/14	–	520	–	–	–	–	–	–	–	–	520
2014/15	–	515	–	–	–	–	–	–	–	–	515
2015/16	–	529	–	–	–	–	–	–	–	–	529
2016/17	–	533	–	–	–	–	–	–	–	–	533
2017/18	–	534	–	–	–	–	–	–	–	–	534
2018/19	–	535	–	–	–	–	–	–	–	–	535
2019/20	–	542	–	–	–	–	–	–	–	–	542
2020/21	–	519	70	73	60	57	74	61	61	63	519
2021/22	–	531	77	69	73	58	58	73	62	61	531
2022/23	–	529	54	78	70	73	59	59	76	60	529
2023/24	–	519	51	54	77	70	74	57	59	77	519
2024/25	–	509	71	50	53	76	68	75	58	58	509
2025/26	–	511	53	73	52	54	77	69	76	57	511