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SCOIL CHOILMCILLE

Roll number: 18625Q Convent Road, Letterkenny, Co. Donegal

School details

Address: Convent Road, Letterkenny, Co. Donegal (F92A386)
Email: [email protected]
Phone: 0749122772
Principal: Pauric Cannon
Ethos: Catholic
DEIS: N
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: Donegal County Council
School patron: Bishop of Raphoe
School type: Ordinary
School level: All-Through School
Planning area: Letterkenny

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

26.96

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	446	18	24.78	33	4
2007/08	484	19	25.47	31	3
2008/09	509	20	25.45	33	4
2009/10	466	20	23.30	29	0
2010/11	426	19	22.42	30	1
2011/12	434	17	25.53	29	0
2012/13	411	16	25.69	33	4
2013/14	412	15	27.47	33	7
2014/15	384	15	25.60	33	3
2015/16	355	14	25.36	32	3
2016/17	328	13	25.23	31	2
2017/18	342	12	28.50	34	6
2019/20	363	14	25.93	32	3
2020/21	356	14	25.43	31	3
2021/22	383	14	27.36	33	4
2022/23	476	19	25.05	31	5
2023/24	613	24	25.54	28	0
2024/25	661	24	27.54	28	0
2025/26	647	24	26.96	28	0

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 1975/76: 375 in 1974/75 → 568, +193 pupils.
Biggest loss in a single year: 1993/94: 679 in 1982/83 → 622, -57 pupils.
Largest single-class increase: 4th Class in 2022/23 (35 → 68, +33).
Largest single-class decrease: 1st Class in 2021/22 (51 → 40, -11).
Largest cohort-step gain: 2nd → 3rd in 2023/24 (53 → 80, +27).
Largest cohort-step loss: 3rd → 4th in 2025/26 (84 → 82, -2).
Overall: 375 (1974/75) → 658 (2025/26), 283.

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	33	82	64.5	6
Senior Infants	32	83	64.5	6
1st Class	40	84	64.7	6
2nd Class	52	84	67.8	6
3rd Class	32	84	66.2	6
4th Class	35	83	64.5	6
5th Class	46	84	65.7	6
6th Class	56	83	66.7	6
Total	328	689	508.1	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 33

+14

SI 2021/22 47

+11

1st 2022/23 58

+24

2nd 2023/24 82

3rd 2024/25 84

-2

4th 2025/26 82

Cohort 2021/22

JI 2021/22 45

+16

SI 2022/23 61

+10

1st 2023/24 71

+10

2nd 2024/25 81

3rd 2025/26 81

Cohort 2022/23

JI 2022/23 68

+15

SI 2023/24 83

1st 2024/25 84

2nd 2025/26 84

Cohort 2023/24

JI 2023/24 82

SI 2024/25 83

1st 2025/26 84

Cohort 2024/25

JI 2024/25 79

SI 2025/26 81

Cohort 2025/26

JI 2025/26 80

Raw data by year

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1974/75	–	375	–	–	–	–	–	–	–	–	375
1975/76	–	–	–	–	–	–	–	–	–	–	568
1976/77	–	615	–	–	–	–	–	–	–	–	615
1977/78	–	–	–	–	–	–	–	–	–	–	656
1978/79	–	647	–	–	–	–	–	–	–	–	647
1979/80	–	660	–	–	–	–	–	–	–	–	660
1980/81	–	646	–	–	–	–	–	–	–	–	646
1981/82	–	689	–	–	–	–	–	–	–	–	689
1982/83	–	679	–	–	–	–	–	–	–	–	679
1993/94	–	622	–	–	–	–	–	–	–	–	622
1994/95	–	608	–	–	–	–	–	–	–	–	608
1995/96	–	562	–	–	–	–	–	–	–	–	562
1996/97	–	540	–	–	–	–	–	–	–	–	540
1997/98	–	515	–	–	–	–	–	–	–	–	515
1998/99	–	502	–	–	–	–	–	–	–	–	502
1999/00	–	488	–	–	–	–	–	–	–	–	488
2000/01	–	498	–	–	–	–	–	–	–	–	498
2001/02	–	493	–	–	–	–	–	–	–	–	493
2002/03	–	467	–	–	–	–	–	–	–	–	467
2003/04	–	472	–	–	–	–	–	–	–	–	472
2004/05	–	476	–	–	–	–	–	–	–	–	476
2005/06	–	461	–	–	–	–	–	–	–	–	461
2006/07	–	489	–	–	–	–	–	–	–	–	489
2007/08	–	520	–	–	–	–	–	–	–	–	520
2008/09	–	552	–	–	–	–	–	–	–	–	552
2009/10	–	517	–	–	–	–	–	–	–	–	517
2010/11	–	475	–	–	–	–	–	–	–	–	475
2011/12	–	434	–	–	–	–	–	–	–	–	434
2012/13	–	411	–	–	–	–	–	–	–	–	411
2013/14	–	412	–	–	–	–	–	–	–	–	412
2014/15	–	384	–	–	–	–	–	–	–	–	384
2015/16	–	355	–	–	–	–	–	–	–	–	355
2016/17	–	328	–	–	–	–	–	–	–	–	328
2017/18	–	342	–	–	–	–	–	–	–	–	342
2018/19	35	338	–	–	–	–	–	–	–	–	373
2019/20	57	306	–	–	–	–	–	–	–	–	363
2020/21	78	278	33	32	51	52	32	43	52	61	356
2021/22	114	269	45	47	40	55	54	35	50	57	383
2022/23	134	342	68	61	58	53	66	68	46	56	476
2023/24	205	408	82	83	71	82	80	76	79	60	613
2024/25	252	409	79	83	84	81	84	83	84	83	661
2025/26	262	396	80	81	84	84	81	82	83	83	658