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
23.88
2025/26
Mainstream classes
24
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+
2008/09
74
5
14.80
16
0
2009/10
157
7
22.43
24
0
2010/11
236
15
15.73
24
0
2011/12
316
17
18.59
28
0
2012/13
409
19
21.53
29
0
2013/14
501
22
22.77
28
0
2014/15
583
22
26.50
30
4
2015/16
662
24
27.58
30
2
2016/17
667
24
27.79
30
1
2017/18
675
24
28.12
30
1
2019/20
651
24
27.12
29
0
2020/21
637
24
26.54
29
0
2021/22
620
24
25.83
28
0
2022/23
605
24
25.21
27
0
2023/24
580
24
24.17
28
0
2024/25
564
24
23.50
27
0
2025/26
573
24
23.88
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2012/13: 328 in 2011/12 → 421, +93 pupils.
Biggest loss in a single year: 2023/24: 617 in 2022/23 → 592, -25 pupils.
Largest single-class increase: 3rd Class in 2025/26 (73 → 86, +13).
Largest single-class decrease: Junior Infants in 2023/24 (73 → 62, -11).
Largest cohort-step gain: 2nd → 3rd in 2025/26 (76 → 86, +10).
Largest cohort-step loss: 2nd → 3rd in 2021/22 (84 → 78, -6).
Overall: 74 (2008/09) → 585 (2025/26), 511.
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
59
78
70.0
6
Senior Infants
56
78
68.8
6
1st Class
64
77
72.3
6
2nd Class
70
84
75.3
6
3rd Class
69
86
77.7
6
4th Class
72
81
76.3
6
5th Class
76
83
78.5
6
6th Class
77
83
79.5
6
Total
74
687
520.5
18
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).