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
22.26
2025/26
Mainstream classes
23
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
598
22
27.18
31
5
2007/08
594
22
27.00
30
3
2008/09
586
23
25.48
30
2
2009/10
581
22
26.41
30
2
2010/11
587
22
26.68
32
3
2011/12
591
22
26.86
31
3
2012/13
577
22
26.23
30
3
2013/14
579
22
26.32
32
3
2014/15
563
22
25.59
29
0
2015/16
550
21
26.19
30
2
2016/17
562
21
26.76
30
2
2017/18
589
22
26.77
30
4
2019/20
608
24
25.33
29
0
2020/21
584
24
24.33
28
0
2021/22
567
24
23.62
27
0
2022/23
553
24
23.04
27
0
2023/24
533
24
22.21
26
0
2024/25
550
23
23.91
26
0
2025/26
512
23
22.26
26
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1979/80: 378 in 1978/79 → 518, +140 pupils.
Biggest loss in a single year: 1993/94: 641 in 1983/84 → 568, -73 pupils.
Largest single-class increase: 4th Class in 2024/25 (119 → 142, +23).
Largest single-class decrease: 4th Class in 2023/24 (143 → 119, -24).
Largest cohort-step gain: 4th → 5th in 2024/25 (119 → 127, +8).
Largest cohort-step loss: 3rd → 4th in 2023/24 (124 → 119, -5).
Overall: 110 (1976/77) → 530 (2025/26), 420.
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
0
0
0.0
1
Senior Infants
0
0
0.0
1
1st Class
0
0
0.0
1
2nd Class
0
0
0.0
1
3rd Class
113
137
128.5
6
4th Class
119
148
136.7
6
5th Class
127
155
142.0
6
6th Class
132
156
145.8
6
Total
110
641
558.5
41
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).