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
24
2025/26
Largest class group
25
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
770
27
28.52
32
8
2007/08
788
28
28.14
33
10
2008/09
771
28
27.54
33
10
2009/10
753
28
26.89
34
6
2010/11
730
28
26.07
34
7
2011/12
715
27
26.48
34
7
2012/13
685
27
25.37
35
4
2013/14
660
26
25.38
34
5
2014/15
639
25
25.56
30
4
2015/16
623
25
24.92
30
2
2016/17
593
24
24.71
31
3
2017/18
573
23
24.91
33
2
2019/20
534
22
24.27
31
1
2020/21
530
22
24.09
31
1
2021/22
499
22
22.68
31
1
2022/23
488
24
20.33
25
0
2023/24
473
24
19.71
25
0
2024/25
483
24
20.12
25
0
2025/26
499
24
20.79
25
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2001/02: 778 in 2000/01 → 799, +21 pupils.
Biggest loss in a single year: 2011/12: 772 in 2010/11 → 715, -57 pupils.
Largest single-class increase: 6th Class in 2024/25 (55 → 72, +17).
Largest single-class decrease: Junior Infants in 2021/22 (72 → 54, -18).
Largest cohort-step gain: SI → 1st in 2025/26 (54 → 62, +8).
Largest cohort-step loss: 5th → 6th in 2021/22 (77 → 72, -5).
Overall: 911 (1993/94) → 511 (2025/26), -400.
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
50
72
58.7
6
Senior Infants
54
70
61.3
6
1st Class
53
70
59.8
6
2nd Class
53
71
62.3
6
3rd Class
54
74
63.8
6
4th Class
54
76
63.3
6
5th Class
52
77
63.7
6
6th Class
55
72
65.5
6
Total
485
911
702.4
33
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).