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
20.79
2025/26
Mainstream classes
14
2025/26
Largest class group
24
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
305
12
25.42
31
2
2007/08
323
13
24.85
28
0
2008/09
342
14
24.43
29
0
2009/10
342
14
24.43
29
0
2010/11
364
15
24.27
28
0
2011/12
370
14
26.43
39
2
2012/13
344
14
24.57
29
0
2013/14
356
13
27.38
34
4
2014/15
333
14
23.79
32
1
2015/16
333
15
22.20
27
0
2016/17
334
15
22.27
28
0
2017/18
319
13
24.54
32
3
2019/20
310
12
25.83
32
2
2020/21
292
12
24.33
32
2
2021/22
270
12
22.50
28
0
2022/23
282
13
21.69
27
0
2023/24
284
14
20.29
25
0
2024/25
282
14
20.14
25
0
2025/26
291
14
20.79
24
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2010/11: 368 in 2009/10 → 393, +25 pupils.
Biggest loss in a single year: 1993/94: 673 in 1982/83 → 557, -116 pupils.
Largest single-class increase: 3rd Class in 2025/26 (51 → 71, +20).
Largest single-class decrease: 3rd Class in 2021/22 (65 → 47, -18).
Largest cohort-step gain: 3rd → 4th in 2025/26 (51 → 67, +16).
Largest cohort-step loss: 2nd → 3rd in 2021/22 (51 → 47, -4).
Overall: 679 (1975/76) → 306 (2025/26), -373.
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
0
0
0.0
1
Senior Infants
0
0
0.0
1
1st Class
0
0
0.0
1
2nd Class
41
65
53.8
6
3rd Class
47
71
56.7
6
4th Class
48
67
56.3
6
5th Class
49
67
58.8
6
6th Class
48
67
60.3
6
Total
286
723
422.7
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).