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
26
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
608
21
28.95
33
7
2007/08
635
22
28.86
32
6
2008/09
631
23
27.43
32
2
2009/10
628
23
27.30
32
3
2010/11
628
23
27.30
30
2
2011/12
662
24
27.58
30
3
2012/13
659
24
27.46
30
2
2013/14
660
24
27.50
30
1
2014/15
662
24
27.58
29
0
2015/16
662
24
27.58
29
0
2016/17
659
24
27.46
29
0
2017/18
656
24
27.33
30
1
2019/20
628
24
26.17
30
2
2020/21
622
24
25.92
29
0
2021/22
618
24
25.75
29
0
2022/23
594
24
24.75
28
0
2023/24
582
24
24.25
28
0
2024/25
579
24
24.12
28
0
2025/26
573
24
23.88
26
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1977/78: 551 in 1976/77 → 629, +78 pupils.
Biggest loss in a single year: 1993/94: 610 in 1983/84 → 473, -137 pupils.
Largest single-class increase: Senior Infants in 2021/22 (63 → 75, +12).
Largest single-class decrease: 2nd Class in 2022/23 (80 → 70, -10).
Largest cohort-step gain: SI → 1st in 2021/22 (63 → 72, +9).
Largest cohort-step loss: 3rd → 4th in 2022/23 (84 → 79, -5).
Overall: 401 (1974/75) → 573 (2025/26), 172.
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
61
73
66.8
6
Senior Infants
63
75
69.0
6
1st Class
69
81
73.0
6
2nd Class
70
85
75.5
6
3rd Class
69
84
75.7
6
4th Class
71
82
77.3
6
5th Class
72
83
78.2
6
6th Class
76
85
79.2
6
Total
401
662
571.7
43
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).