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
19.25
2025/26
Mainstream classes
16
2025/26
Largest class group
21
2025/26
Classes with 30+ pupils
0
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
282
14
20.14
26
0
2007/08
307
15
20.47
24
0
2008/09
299
16
18.69
25
0
2009/10
290
15
19.33
26
0
2010/11
300
14
21.43
34
1
2011/12
301
15
20.07
26
0
2012/13
280
16
17.50
23
0
2013/14
267
14
19.07
25
0
2014/15
276
14
19.71
25
0
2015/16
286
15
19.07
25
0
2016/17
300
15
20.00
28
0
2017/18
325
15
21.67
26
0
2019/20
373
17
21.94
27
0
2020/21
369
17
21.71
28
0
2021/22
356
18
19.78
27
0
2022/23
353
18
19.61
25
0
2023/24
333
17
19.59
24
0
2024/25
325
16
20.31
24
0
2025/26
308
16
19.25
21
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2019/20: 345 in 2018/19 → 379, +34 pupils.
Biggest loss in a single year: 1993/94: 469 in 1982/83 → 399, -70 pupils.
Largest single-class increase: Junior Infants in 2021/22 (38 → 46, +8).
Largest single-class decrease: 4th Class in 2023/24 (48 → 34, -14).
Largest cohort-step gain: 1st → 2nd in 2022/23 (42 → 44, +2).
Largest cohort-step loss: 2nd → 3rd in 2025/26 (43 → 40, -3).
Overall: 578 (1979/80) → 314 (2025/26), -264.
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
38
46
41.5
6
Senior Infants
39
46
42.7
6
1st Class
35
45
40.7
6
2nd Class
37
49
42.5
6
3rd Class
35
49
42.3
6
4th Class
34
54
44.5
6
5th Class
34
54
45.2
6
6th Class
34
59
47.3
6
Total
275
578
344.0
37
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).