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
25.50
2025/26
Mainstream classes
26
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+
2006/07
561
21
26.71
31
3
2007/08
584
21
27.81
31
5
2008/09
567
21
27.00
29
0
2009/10
553
20
27.65
31
3
2010/11
566
20
28.30
32
6
2011/12
591
21
28.14
31
6
2012/13
606
21
28.86
32
7
2013/14
602
22
27.36
31
2
2014/15
636
23
27.65
30
6
2015/16
680
24
28.33
32
7
2016/17
706
25
28.24
32
10
2017/18
723
26
27.81
31
7
2019/20
736
26
28.31
31
5
2020/21
726
26
27.92
30
6
2021/22
720
26
27.69
30
5
2022/23
702
26
27.00
30
5
2023/24
692
26
26.62
29
0
2024/25
677
26
26.04
29
0
2025/26
663
26
25.50
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2015/16: 636 in 2014/15 → 680, +44 pupils.
Biggest loss in a single year: 1993/94: 542 in 1983/84 → 435, -107 pupils.
Largest single-class increase: 3rd Class in 2021/22 (136 → 143, +7).
Largest single-class decrease: 2nd Class in 2025/26 (137 → 124, -13).
Largest cohort-step gain: 2nd → 3rd in 2021/22 (136 → 143, +7).
Largest cohort-step loss: 4th → 5th in 2024/25 (139 → 136, -3).
Overall: 537 (1981/82) → 663 (2025/26), 126.
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
124
138
132.3
6
3rd Class
131
143
136.3
6
4th Class
129
146
137.7
6
5th Class
131
150
141.8
6
6th Class
139
160
148.5
6
Total
435
739
607.4
36
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).