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BLESSINGTON 1 N S

Roll number: 06176U Blessington Demesne, Blessington, Co Wicklow

School details

Address: Blessington Demesne, Blessington, Co Wicklow (W91YX06)
Email: [email protected]
Phone: 045900879
Principal: Lilian Murphy
Ethos: Church Of Ireland
DEIS: N
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: Wicklow County Council
School patron: Archbishop of Dublin & Bishop of Glendalough COI
School type: Ordinary
School level: All-Through School
Planning area: Blessington

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

24.38

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	82	4	20.50	29	0
2007/08	82	4	20.50	28	0
2008/09	89	4	22.25	27	0
2009/10	101	4	25.25	29	0
2010/11	130	5	26.00	31	1
2011/12	136	5	27.20	33	2
2012/13	154	6	25.67	33	1
2013/14	157	6	26.17	31	1
2014/15	155	6	25.83	35	1
2015/16	165	7	23.57	29	0
2016/17	175	7	25.00	30	2
2017/18	196	8	24.50	29	0
2019/20	215	8	26.88	31	2
2020/21	199	8	24.88	30	1
2021/22	192	8	24.00	27	0
2022/23	203	8	25.38	29	0
2023/24	201	8	25.12	30	2
2024/25	195	8	24.38	30	1
2025/26	195	8	24.38	30	1

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 2010/11: 101 in 2009/10 → 130, +29 pupils.
Biggest loss in a single year: 2020/21: 215 in 2019/20 → 199, -16 pupils.
Largest single-class increase: Senior Infants in 2023/24 (22 → 30, +8).
Largest single-class decrease: Senior Infants in 2024/25 (30 → 16, -14).
Largest cohort-step gain: 2nd → 3rd in 2022/23 (23 → 28, +5).
Largest cohort-step loss: 4th → 5th in 2022/23 (24 → 21, -3).
Overall: 32 (1974/75) → 195 (2025/26), 163.

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	16	29	22.0	6
Senior Infants	16	30	22.3	6
1st Class	17	30	23.3	6
2nd Class	22	28	24.5	6
3rd Class	22	28	25.2	6
4th Class	21	30	26.7	6
5th Class	21	29	25.5	6
6th Class	25	30	28.0	6
Total	32	215	100.2	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 20

SI 2021/22 21

1st 2022/23 25

2nd 2023/24 27

3rd 2024/25 27

4th 2025/26 28

Cohort 2021/22

JI 2021/22 23

-1

SI 2022/23 22

1st 2023/24 23

2nd 2024/25 24

3rd 2025/26 25

Cohort 2022/23

JI 2022/23 29

SI 2023/24 30

1st 2024/25 30

-2

2nd 2025/26 28

Cohort 2023/24

JI 2023/24 16

SI 2024/25 16

1st 2025/26 17

Cohort 2024/25

JI 2024/25 20

SI 2025/26 21

Cohort 2025/26

JI 2025/26 24

Raw data by year

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1974/75	14	18	–	–	–	–	–	–	–	–	32
1975/76	–	–	–	–	–	–	–	–	–	–	36
1976/77	16	19	–	–	–	–	–	–	–	–	35
1977/78	16	18	–	–	–	–	–	–	–	–	34
1978/79	16	18	–	–	–	–	–	–	–	–	34
1979/80	18	20	–	–	–	–	–	–	–	–	38
1980/81	17	19	–	–	–	–	–	–	–	–	36
1981/82	23	19	–	–	–	–	–	–	–	–	42
1982/83	18	18	–	–	–	–	–	–	–	–	36
1983/84	19	24	–	–	–	–	–	–	–	–	43
1993/94	26	26	–	–	–	–	–	–	–	–	52
1994/95	21	20	–	–	–	–	–	–	–	–	41
1995/96	21	21	–	–	–	–	–	–	–	–	42
1996/97	20	20	–	–	–	–	–	–	–	–	40
1997/98	22	21	–	–	–	–	–	–	–	–	43
1998/99	17	26	–	–	–	–	–	–	–	–	43
1999/00	18	28	–	–	–	–	–	–	–	–	46
2000/01	22	36	–	–	–	–	–	–	–	–	58
2001/02	27	40	–	–	–	–	–	–	–	–	67
2002/03	27	37	–	–	–	–	–	–	–	–	64
2003/04	25	38	–	–	–	–	–	–	–	–	63
2004/05	31	37	–	–	–	–	–	–	–	–	68
2005/06	40	43	–	–	–	–	–	–	–	–	83
2006/07	40	42	–	–	–	–	–	–	–	–	82
2007/08	43	39	–	–	–	–	–	–	–	–	82
2008/09	49	40	–	–	–	–	–	–	–	–	89
2009/10	55	46	–	–	–	–	–	–	–	–	101
2010/11	71	59	–	–	–	–	–	–	–	–	130
2011/12	72	64	–	–	–	–	–	–	–	–	136
2012/13	81	73	–	–	–	–	–	–	–	–	154
2013/14	78	79	–	–	–	–	–	–	–	–	157
2014/15	79	76	–	–	–	–	–	–	–	–	155
2015/16	85	80	–	–	–	–	–	–	–	–	165
2016/17	86	89	–	–	–	–	–	–	–	–	175
2017/18	102	94	–	–	–	–	–	–	–	–	196
2018/19	110	100	–	–	–	–	–	–	–	–	210
2019/20	113	102	–	–	–	–	–	–	–	–	215
2020/21	104	95	20	24	22	23	24	29	27	30	199
2021/22	95	97	23	21	23	23	25	24	26	27	192
2022/23	106	97	29	22	25	22	28	28	21	28	203
2023/24	96	105	16	30	23	27	22	30	28	25	201
2024/25	98	97	20	16	30	24	27	21	29	28	195
2025/26	88	107	24	21	17	28	25	28	22	30	195