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

ST OLIVER PLUNKETT NS

Roll number: 19476H Blackcastle, Navan, Co. Meath

School details

Address: Blackcastle, Navan, Co. Meath (C15R642)
Email: [email protected]
Phone: 0469023347
Principal: Catherine Keane Faulkner (Acting)
Ethos: Catholic
DEIS: Y
Irish classification: No subjects through Irish
Gaeltacht: N
Island: N
Local authority: Meath County Council
School patron: Bishop of Meath
School type: Ordinary with Special Classes
School level: All-Through School
Planning area: Navan

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

24.19

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	577	22	26.23	32	5
2007/08	565	23	24.57	30	2
2008/09	523	22	23.77	29	0
2009/10	497	20	24.85	30	4
2010/11	469	19	24.68	30	1
2011/12	491	18	27.28	30	5
2012/13	478	18	26.56	31	4
2013/14	480	17	28.24	32	5
2014/15	469	18	26.06	31	6
2015/16	470	17	27.65	31	8
2016/17	463	18	25.72	31	6
2017/18	448	17	26.35	31	4
2019/20	444	17	26.12	32	5
2020/21	437	20	21.85	27	0
2021/22	432	17	25.41	32	4
2022/23	413	17	24.29	28	0
2023/24	406	17	23.88	28	0
2024/25	387	17	22.76	29	0
2025/26	387	16	24.19	29	0

Data highlights

Key numbers to spot outliers or notable changes.

Biggest gain in a single year: 1976/77: 263 in 1975/76 → 411, +148 pupils.
Biggest loss in a single year: 1993/94: 673 in 1983/84 → 573, -100 pupils.
Largest single-class increase: 1st Class in 2025/26 (41 → 56, +15).
Largest single-class decrease: 1st Class in 2024/25 (55 → 41, -14).
Largest cohort-step gain: SI → 1st in 2025/26 (49 → 56, +7).
Largest cohort-step loss: SI → 1st in 2024/25 (44 → 41, -3).
Overall: 263 (1975/76) → 399 (2025/26), 136.

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	34	53	44.7	6
Senior Infants	38	52	47.3	6
1st Class	41	56	50.8	6
2nd Class	44	57	51.2	6
3rd Class	49	57	52.5	6
4th Class	48	63	53.2	6
5th Class	49	62	55.5	6
6th Class	51	62	57.2	6
Total	263	710	545.5	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 53

-1

SI 2021/22 52

-2

1st 2022/23 50

2nd 2023/24 53

-1

3rd 2024/25 52

4th 2025/26 54

Cohort 2021/22

JI 2021/22 51

-1

SI 2022/23 50

1st 2023/24 55

2nd 2024/25 57

3rd 2025/26 57

Cohort 2022/23

JI 2022/23 44

SI 2023/24 44

-3

1st 2024/25 41

2nd 2025/26 44

Cohort 2023/24

JI 2023/24 47

SI 2024/25 49

1st 2025/26 56

Cohort 2024/25

JI 2024/25 34

SI 2025/26 38

Cohort 2025/26

JI 2025/26 39

Raw data by year

Year	Female	Male	JI	SI	1st	2nd	3rd	4th	5th	6th	Total
1975/76	–	–	–	–	–	–	–	–	–	–	263
1976/77	154	257	–	–	–	–	–	–	–	–	411
1977/78	196	353	–	–	–	–	–	–	–	–	549
1978/79	–	399	–	–	–	–	–	–	–	–	633
1979/80	264	427	–	–	–	–	–	–	–	–	691
1980/81	262	443	–	–	–	–	–	–	–	–	705
1981/82	273	409	–	–	–	–	–	–	–	–	682
1982/83	281	391	–	–	–	–	–	–	–	–	672
1983/84	284	389	–	–	–	–	–	–	–	–	673
1993/94	238	335	–	–	–	–	–	–	–	–	573
1994/95	231	346	–	–	–	–	–	–	–	–	577
1995/96	230	354	–	–	–	–	–	–	–	–	584
1996/97	225	352	–	–	–	–	–	–	–	–	577
1997/98	241	370	–	–	–	–	–	–	–	–	611
1998/99	251	365	–	–	–	–	–	–	–	–	616
1999/00	269	357	–	–	–	–	–	–	–	–	626
2000/01	270	390	–	–	–	–	–	–	–	–	660
2001/02	276	391	–	–	–	–	–	–	–	–	667
2002/03	310	400	–	–	–	–	–	–	–	–	710
2003/04	300	375	–	–	–	–	–	–	–	–	675
2004/05	292	356	–	–	–	–	–	–	–	–	648
2005/06	289	328	–	–	–	–	–	–	–	–	617
2006/07	278	332	–	–	–	–	–	–	–	–	610
2007/08	276	320	–	–	–	–	–	–	–	–	596
2008/09	261	291	–	–	–	–	–	–	–	–	552
2009/10	250	271	–	–	–	–	–	–	–	–	521
2010/11	226	267	–	–	–	–	–	–	–	–	493
2011/12	224	273	–	–	–	–	–	–	–	–	497
2012/13	231	254	–	–	–	–	–	–	–	–	485
2013/14	225	262	–	–	–	–	–	–	–	–	487
2014/15	233	239	–	–	–	–	–	–	–	–	472
2015/16	241	237	–	–	–	–	–	–	–	–	478
2016/17	239	232	–	–	–	–	–	–	–	–	471
2017/18	223	233	–	–	–	–	–	–	–	–	456
2018/19	216	221	–	–	–	–	–	–	–	–	437
2019/20	220	224	–	–	–	–	–	–	–	–	444
2020/21	218	219	53	51	54	50	50	63	59	57	437
2021/22	207	225	51	52	49	55	51	52	62	60	432
2022/23	196	217	44	50	50	48	56	49	54	62	413
2023/24	202	210	47	44	55	53	49	53	49	56	412
2024/25	195	204	34	49	41	57	52	48	55	51	399
2025/26	203	196	39	38	56	44	57	54	54	57	399