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
23.67
2025/26
Mainstream classes
15
2025/26
Largest class group
30
2025/26
Classes with 30+ pupils
1
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
244
9
27.11
32
2
2007/08
242
9
26.89
31
3
2008/09
241
9
26.78
32
4
2009/10
240
9
26.67
32
3
2010/11
227
9
25.22
33
2
2011/12
219
8
27.38
32
3
2012/13
223
8
27.88
33
4
2013/14
236
8
29.50
33
4
2014/15
250
9
27.78
33
3
2015/16
225
9
25.00
33
3
2016/17
216
8
27.00
34
4
2017/18
203
8
25.38
34
3
2019/20
233
9
25.89
31
1
2020/21
262
10
26.20
32
2
2021/22
291
12
24.25
35
3
2022/23
302
13
23.23
35
1
2023/24
341
14
24.36
35
3
2024/25
342
15
22.80
32
1
2025/26
355
15
23.67
30
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1980/81: 340 in 1979/80 → 751, +411 pupils.
Biggest loss in a single year: 1979/80: 826 in 1978/79 → 340, -486 pupils.
Largest single-class increase: 1st Class in 2021/22 (31 → 59, +28).
Largest single-class decrease: 2nd Class in 2024/25 (57 → 28, -29).
Largest cohort-step gain: SI → 1st in 2025/26 (44 → 51, +7).
Largest cohort-step loss: JI → SI in 2022/23 (31 → 24, -7).
Overall: 841 (1974/75) → 379 (2025/26), -462.
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
29
45
39.0
6
Senior Infants
24
57
41.3
6
1st Class
26
59
43.8
6
2nd Class
28
58
43.0
6
3rd Class
26
65
42.7
6
4th Class
22
63
42.3
6
5th Class
24
63
39.7
6
6th Class
19
51
32.7
6
Total
203
865
379.8
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
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).