Home · By area · Release notes. Enrolment by planning area, local authority, school patron, county.

LISDOONAN N S

Roll number: 15143G Lisdonnan, Carrickmacross, Co. Monaghan

School details

Address: Lisdonnan, Carrickmacross, Co. Monaghan (A81WR65)
Email: [email protected]
Phone: 0429662375
Principal: Carmel O' Reilly
Ethos: Catholic
DEIS: N
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: Monaghan County Council
School patron: Bishop of Clogher
School type: Ordinary
School level: All-Through School
Planning area: Carrickmacross

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

25.00

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	106	4	26.50	29	0
2007/08	111	4	27.75	35	2
2008/09	116	4	29.00	34	2
2009/10	117	5	23.40	35	1
2010/11	108	5	21.60	25	0
2011/12	106	4	26.50	33	1
2012/13	118	4	29.50	38	2
2013/14	126	5	25.20	33	2
2014/15	131	5	26.20	32	2
2015/16	120	5	24.00	27	0
2016/17	119	5	23.80	26	0
2017/18	129	5	25.80	32	1
2019/20	145	5	29.00	33	2
2020/21	143	6	23.83	32	1
2021/22	142	6	23.67	30	1
2022/23	144	6	24.00	31	1
2023/24	153	6	25.50	31	1
2024/25	156	6	26.00	30	2
2025/26	150	6	25.00	31	1

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 1993/94: 54 in 1983/84 → 126, +72 pupils.
Biggest loss in a single year: 2015/16: 131 in 2014/15 → 120, -11 pupils.
Largest single-class increase: 2nd Class in 2021/22 (14 → 25, +11).
Largest single-class decrease: Junior Infants in 2025/26 (20 → 13, -7).
Largest cohort-step gain: JI → SI in 2022/23 (17 → 19, +2).
Largest cohort-step loss: SI → 1st in 2025/26 (20 → 18, -2).
Overall: 55 (1974/75) → 150 (2025/26), 95.

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	13	21	17.7	6
Senior Infants	15	21	19.3	6
1st Class	15	25	20.0	6
2nd Class	14	25	19.7	6
3rd Class	14	25	19.7	6
4th Class	13	24	18.2	6
5th Class	13	24	17.3	6
6th Class	11	23	16.2	6
Total	45	156	107.0	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 21

SI 2021/22 21

1st 2022/23 22

2nd 2023/24 23

-1

3rd 2024/25 22

-1

4th 2025/26 21

Cohort 2021/22

JI 2021/22 17

SI 2022/23 19

1st 2023/24 19

2nd 2024/25 19

-1

3rd 2025/26 18

Cohort 2022/23

JI 2022/23 15

SI 2023/24 15

1st 2024/25 15

2nd 2025/26 16

Cohort 2023/24

JI 2023/24 20

SI 2024/25 20

-2

1st 2025/26 18

Cohort 2024/25

JI 2024/25 20

SI 2025/26 20

Cohort 2025/26

JI 2025/26 13

Raw data by year

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1974/75	26	29	–	–	–	–	–	–	–	–	55
1975/76	–	–	–	–	–	–	–	–	–	–	57
1976/77	30	31	–	–	–	–	–	–	–	–	61
1977/78	27	32	–	–	–	–	–	–	–	–	59
1978/79	26	28	–	–	–	–	–	–	–	–	54
1979/80	28	27	–	–	–	–	–	–	–	–	55
1980/81	28	22	–	–	–	–	–	–	–	–	50
1981/82	25	23	–	–	–	–	–	–	–	–	48
1982/83	22	23	–	–	–	–	–	–	–	–	45
1983/84	23	31	–	–	–	–	–	–	–	–	54
1993/94	66	60	–	–	–	–	–	–	–	–	126
1994/95	64	59	–	–	–	–	–	–	–	–	123
1995/96	62	63	–	–	–	–	–	–	–	–	125
1996/97	54	70	–	–	–	–	–	–	–	–	124
1997/98	49	71	–	–	–	–	–	–	–	–	120
1998/99	49	70	–	–	–	–	–	–	–	–	119
1999/00	51	64	–	–	–	–	–	–	–	–	115
2000/01	45	65	–	–	–	–	–	–	–	–	110
2001/02	42	62	–	–	–	–	–	–	–	–	104
2002/03	49	63	–	–	–	–	–	–	–	–	112
2003/04	51	60	–	–	–	–	–	–	–	–	111
2004/05	50	54	–	–	–	–	–	–	–	–	104
2005/06	46	50	–	–	–	–	–	–	–	–	96
2006/07	49	57	–	–	–	–	–	–	–	–	106
2007/08	49	62	–	–	–	–	–	–	–	–	111
2008/09	47	69	–	–	–	–	–	–	–	–	116
2009/10	48	69	–	–	–	–	–	–	–	–	117
2010/11	42	66	–	–	–	–	–	–	–	–	108
2011/12	38	68	–	–	–	–	–	–	–	–	106
2012/13	44	74	–	–	–	–	–	–	–	–	118
2013/14	51	75	–	–	–	–	–	–	–	–	126
2014/15	56	75	–	–	–	–	–	–	–	–	131
2015/16	52	68	–	–	–	–	–	–	–	–	120
2016/17	58	61	–	–	–	–	–	–	–	–	119
2017/18	66	63	–	–	–	–	–	–	–	–	129
2018/19	62	72	–	–	–	–	–	–	–	–	134
2019/20	74	71	–	–	–	–	–	–	–	–	145
2020/21	71	72	21	21	25	14	18	13	15	16	143
2021/22	70	72	17	21	21	25	14	16	13	15	142
2022/23	70	74	15	19	22	21	25	14	17	11	144
2023/24	72	81	20	15	19	23	21	24	14	17	153
2024/25	74	82	20	20	15	19	22	21	24	15	156
2025/26	72	78	13	20	18	16	18	21	21	23	150