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GLENSWILLY N S

Roll number: 19313C Newmills, Letterkenny, Co. Donegal

School details

Address: Newmills, Letterkenny, Co. Donegal (F92RH94)
Email: [email protected]
Phone: 0749137342
Principal: Joseph Gallinagh
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 with Special Classes
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

23.27

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	235	8	29.38	34	6
2007/08	237	9	26.33	34	4
2008/09	244	9	27.11	34	5
2009/10	243	9	27.00	34	5
2010/11	242	9	26.89	34	5
2011/12	239	9	26.56	35	5
2012/13	254	9	28.22	35	4
2013/14	259	9	28.78	35	4
2014/15	260	10	26.00	35	4
2015/16	277	10	27.70	35	3
2016/17	274	10	27.40	35	2
2017/18	276	10	27.60	35	3
2019/20	274	10	27.40	34	5
2020/21	258	10	25.80	34	5
2021/22	255	10	25.50	34	5
2022/23	254	10	25.40	34	4
2023/24	248	10	24.80	34	4
2024/25	259	10	25.90	34	3
2025/26	256	11	23.27	32	3

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 1980/81: 150 in 1979/80 → 245, +95 pupils.
Biggest loss in a single year: 1979/80: 236 in 1978/79 → 150, -86 pupils.
Largest single-class increase: Senior Infants in 2025/26 (28 → 44, +16).
Largest single-class decrease: Junior Infants in 2025/26 (43 → 31, -12).
Largest cohort-step gain: 3rd → 4th in 2025/26 (26 → 28, +2).
Largest cohort-step loss: JI → SI in 2024/25 (31 → 28, -3).
Overall: 120 (1974/75) → 262 (2025/26), 142.

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	25	43	32.3	6
Senior Infants	24	44	31.8	6
1st Class	25	36	30.3	6
2nd Class	26	36	31.7	6
3rd Class	26	36	31.5	6
4th Class	28	38	32.3	6
5th Class	30	38	32.7	6
6th Class	30	38	33.8	6
Total	120	277	230.0	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 25

-1

SI 2021/22 24

1st 2022/23 25

2nd 2023/24 26

3rd 2024/25 26

4th 2025/26 28

Cohort 2021/22

JI 2021/22 35

-1

SI 2022/23 34

1st 2023/24 36

2nd 2024/25 36

3rd 2025/26 36

Cohort 2022/23

JI 2022/23 29

SI 2023/24 30

-1

1st 2024/25 29

2nd 2025/26 31

Cohort 2023/24

JI 2023/24 31

-3

SI 2024/25 28

1st 2025/26 30

Cohort 2024/25

JI 2024/25 43

SI 2025/26 44

Cohort 2025/26

JI 2025/26 31

Raw data by year

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1974/75	53	67	–	–	–	–	–	–	–	–	120
1975/76	–	–	–	–	–	–	–	–	–	–	183
1976/77	92	109	–	–	–	–	–	–	–	–	201
1977/78	–	–	–	–	–	–	–	–	–	–	215
1978/79	105	131	–	–	–	–	–	–	–	–	236
1979/80	19	131	–	–	–	–	–	–	–	–	150
1980/81	103	142	–	–	–	–	–	–	–	–	245
1981/82	107	128	–	–	–	–	–	–	–	–	235
1982/83	111	135	–	–	–	–	–	–	–	–	246
1993/94	119	118	–	–	–	–	–	–	–	–	237
1994/95	114	113	–	–	–	–	–	–	–	–	227
1995/96	106	111	–	–	–	–	–	–	–	–	217
1996/97	105	104	–	–	–	–	–	–	–	–	209
1997/98	93	107	–	–	–	–	–	–	–	–	200
1998/99	94	102	–	–	–	–	–	–	–	–	196
1999/00	99	90	–	–	–	–	–	–	–	–	189
2000/01	91	97	–	–	–	–	–	–	–	–	188
2001/02	85	105	–	–	–	–	–	–	–	–	190
2002/03	90	106	–	–	–	–	–	–	–	–	196
2003/04	97	112	–	–	–	–	–	–	–	–	209
2004/05	105	106	–	–	–	–	–	–	–	–	211
2005/06	110	116	–	–	–	–	–	–	–	–	226
2006/07	114	121	–	–	–	–	–	–	–	–	235
2007/08	116	121	–	–	–	–	–	–	–	–	237
2008/09	114	130	–	–	–	–	–	–	–	–	244
2009/10	113	130	–	–	–	–	–	–	–	–	243
2010/11	116	126	–	–	–	–	–	–	–	–	242
2011/12	108	131	–	–	–	–	–	–	–	–	239
2012/13	98	156	–	–	–	–	–	–	–	–	254
2013/14	100	159	–	–	–	–	–	–	–	–	259
2014/15	98	162	–	–	–	–	–	–	–	–	260
2015/16	111	166	–	–	–	–	–	–	–	–	277
2016/17	117	157	–	–	–	–	–	–	–	–	274
2017/18	114	162	–	–	–	–	–	–	–	–	276
2018/19	112	160	–	–	–	–	–	–	–	–	272
2019/20	116	158	–	–	–	–	–	–	–	–	274
2020/21	121	137	25	31	32	34	30	38	30	38	258
2021/22	127	128	35	24	30	33	34	31	38	30	255
2022/23	135	119	29	34	25	30	33	34	31	38	254
2023/24	126	127	31	30	36	26	30	33	34	31	253
2024/25	131	133	43	28	29	36	26	30	33	34	264
2025/26	130	132	31	44	30	31	36	28	30	32	262