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
21.33
2025/26
Mainstream classes
12
2025/26
Largest class group
33
2025/26
Classes with 30+ pupils
2
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
290
11
26.36
33
3
2007/08
292
11
26.55
31
2
2008/09
303
12
25.25
31
2
2009/10
300
12
25.00
33
2
2010/11
303
13
23.31
28
0
2011/12
338
13
26.00
34
2
2012/13
335
13
25.77
31
2
2013/14
344
13
26.46
34
2
2014/15
350
13
26.92
32
3
2015/16
349
13
26.85
34
3
2016/17
365
14
26.07
34
2
2017/18
350
14
25.00
34
3
2019/20
332
13
25.54
32
3
2020/21
304
13
23.38
31
2
2021/22
277
12
23.08
32
2
2022/23
286
11
26.00
32
5
2023/24
271
12
22.58
33
3
2024/25
272
12
22.67
34
2
2025/26
256
12
21.33
33
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2011/12: 321 in 2010/11 → 348, +27 pupils.
Biggest loss in a single year: 1993/94: 464 in 1982/83 → 356, -108 pupils.
Largest single-class increase: Senior Infants in 2023/24 (41 → 63, +22).
Largest single-class decrease: Senior Infants in 2024/25 (63 → 41, -22).
Largest cohort-step gain: JI → SI in 2025/26 (59 → 62, +3).
Largest cohort-step loss: SI → 1st in 2021/22 (56 → 23, -33).
Overall: 397 (1975/76) → 273 (2025/26), -124.
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
43
64
51.7
6
Senior Infants
41
63
53.2
6
1st Class
23
32
26.8
6
2nd Class
21
33
28.0
6
3rd Class
20
32
27.7
6
4th Class
22
40
31.7
6
5th Class
21
41
30.7
6
6th Class
27
40
34.3
6
Total
273
464
339.4
41
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
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).