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
24.38
2025/26
Mainstream classes
24
2025/26
Largest class group
27
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
414
14
29.57
33
9
2007/08
434
15
28.93
32
9
2008/09
459
16
28.69
32
8
2009/10
470
16
29.38
32
7
2010/11
469
16
29.31
31
8
2011/12
477
16
29.81
32
9
2012/13
488
17
28.71
32
6
2013/14
520
18
28.89
32
5
2014/15
532
19
28.00
31
4
2015/16
576
20
28.80
34
8
2016/17
605
21
28.81
33
11
2017/18
642
22
29.18
33
13
2019/20
677
24
28.21
33
8
2020/21
669
24
27.88
33
7
2021/22
660
24
27.50
32
7
2022/23
647
24
26.96
32
6
2023/24
617
24
25.71
30
3
2024/25
596
24
24.83
29
0
2025/26
585
24
24.38
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2015/16: 532 in 2014/15 → 576, +44 pupils.
Biggest loss in a single year: 2023/24: 647 in 2022/23 → 617, -30 pupils.
Largest single-class increase: 6th Class in 2021/22 (77 → 87, +10).
Largest single-class decrease: 1st Class in 2021/22 (88 → 72, -16).
Largest cohort-step gain: 1st → 2nd in 2025/26 (76 → 79, +3).
Largest cohort-step loss: 2nd → 3rd in 2022/23 (87 → 85, -2).
Overall: 211 (1993/94) → 591 (2025/26), 380.
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
67
77
72.3
6
Senior Infants
66
76
72.0
6
1st Class
66
88
75.0
6
2nd Class
72
87
78.3
6
3rd Class
72
92
80.5
6
4th Class
73
92
83.0
6
5th Class
72
91
84.2
6
6th Class
77
91
84.7
6
Total
211
677
445.8
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).