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
23.38
2025/26
Mainstream classes
16
2025/26
Largest class group
28
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+
2007/08
81
4
20.25
23
0
2008/09
138
5
27.60
28
0
2009/10
198
7
28.29
31
2
2010/11
256
11
23.27
29
0
2011/12
286
12
23.83
31
1
2012/13
322
14
23.00
30
1
2013/14
359
14
25.64
29
0
2014/15
387
15
25.80
31
2
2015/16
387
15
25.80
30
1
2016/17
405
16
25.31
29
0
2017/18
414
16
25.88
31
1
2019/20
415
16
25.94
29
0
2020/21
406
16
25.38
28
0
2021/22
393
16
24.56
29
0
2022/23
396
16
24.75
29
0
2023/24
401
16
25.06
28
0
2024/25
384
16
24.00
26
0
2025/26
374
16
23.38
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2009/10: 138 in 2008/09 → 198, +60 pupils.
Biggest loss in a single year: 2024/25: 401 in 2023/24 → 384, -17 pupils.
Largest single-class increase: 2nd Class in 2022/23 (46 → 54, +8).
Largest single-class decrease: 3rd Class in 2021/22 (56 → 43, -13).
Largest cohort-step gain: 4th → 5th in 2023/24 (44 → 52, +8).
Largest cohort-step loss: 1st → 2nd in 2021/22 (50 → 46, -4).
Overall: 81 (2007/08) → 374 (2025/26), 293.
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
27
49
41.3
6
Senior Infants
42
52
47.5
6
1st Class
45
51
48.7
6
2nd Class
43
54
49.2
6
3rd Class
43
56
49.8
6
4th Class
44
55
50.3
6
5th Class
49
55
53.0
6
6th Class
50
57
52.5
6
Total
81
415
337.5
19
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).