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TIRELLAN HEIGHTS N S

Roll number: 19795A Tirellan Heights, Headford Road, Galway

School details

Address: Tirellan Heights, Headford Road, Galway (H91X853)
Email: [email protected]
Phone: 091763844
Principal: Kieran Tierney
Ethos: Catholic
DEIS: Y
Irish classification: No subjects through Irish
Gaeltacht: Y
Island: N
Local authority: Galway City Council
School patron: Bishop of Galway, Kilmacduagh & Kilfenora
School type: Ordinary
School level: All-Through School
Planning area: Galway City

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: 2008/09: 446 in 2007/08 → 493, +47 pupils.
Biggest loss in a single year: 1998/99: 541 in 1997/98 → 503, -38 pupils.
Largest single-class increase: 1st Class in 2024/25 (35 → 52, +17).
Largest single-class decrease: 5th Class in 2024/25 (56 → 42, -14).
Largest cohort-step gain: JI → SI in 2023/24 (41 → 48, +7).
Largest cohort-step loss: 2nd → 3rd in 2024/25 (44 → 39, -5).
Overall: 593 (1993/94) → 330 (2025/26 (preliminary)), -263.

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	36	45	40.6	5
Senior Infants	40	48	43.4	5
1st Class	35	52	43.6	5
2nd Class	36	56	45.2	5
3rd Class	39	53	45.4	5
4th Class	44	54	47.4	5
5th Class	42	56	49.8	5
6th Class	48	54	50.6	5
Total	330	593	456.5	33

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 45

-1

SI 2021/22 44

1st 2022/23 46

-2

2nd 2023/24 44

-5

3rd 2024/25 39

Cohort 2021/22

JI 2021/22 36

SI 2022/23 40

-5

1st 2023/24 35

2nd 2024/25 36

Cohort 2022/23

JI 2022/23 41

SI 2023/24 48

1st 2024/25 52

Cohort 2023/24

JI 2023/24 40

SI 2024/25 44

Cohort 2024/25

JI 2024/25 41

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
1993/94	275	318	–	–	–	–	–	–	–	–	593
1994/95	272	309	–	–	–	–	–	–	–	–	581
1995/96	262	302	–	–	–	–	–	–	–	–	564
1996/97	247	313	–	–	–	–	–	–	–	–	560
1997/98	229	312	–	–	–	–	–	–	–	–	541
1998/99	217	286	–	–	–	–	–	–	–	–	503
1999/00	212	287	–	–	–	–	–	–	–	–	499
2000/01	205	269	–	–	–	–	–	–	–	–	474
2001/02	201	255	–	–	–	–	–	–	–	–	456
2002/03	205	244	–	–	–	–	–	–	–	–	449
2003/04	190	224	–	–	–	–	–	–	–	–	414
2004/05	211	229	–	–	–	–	–	–	–	–	440
2005/06	208	216	–	–	–	–	–	–	–	–	424
2006/07	234	224	–	–	–	–	–	–	–	–	458
2007/08	229	217	–	–	–	–	–	–	–	–	446
2008/09	241	252	–	–	–	–	–	–	–	–	493
2009/10	231	239	–	–	–	–	–	–	–	–	470
2010/11	247	241	–	–	–	–	–	–	–	–	488
2011/12	257	230	–	–	–	–	–	–	–	–	487
2012/13	256	250	–	–	–	–	–	–	–	–	506
2013/14	240	248	–	–	–	–	–	–	–	–	488
2014/15	218	241	–	–	–	–	–	–	–	–	459
2015/16	218	232	–	–	–	–	–	–	–	–	450
2016/17	207	229	–	–	–	–	–	–	–	–	436
2017/18	199	223	–	–	–	–	–	–	–	–	422
2018/19	191	225	–	–	–	–	–	–	–	–	416
2019/20	175	213	–	–	–	–	–	–	–	–	388
2020/21	178	206	45	41	45	56	46	47	50	54	384
2021/22	182	183	36	44	40	46	53	47	50	49	365
2022/23	180	196	41	40	46	44	49	54	51	51	376
2023/24	180	176	40	48	35	44	40	45	56	48	356
2024/25	182	167	41	44	52	36	39	44	42	51	349
2025/26 (preliminary)	172	158	–	–	–	–	–	–	–	–	330