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
26.39
2025/26
Mainstream classes
23
2025/26
Largest class group
29
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
469
17
27.59
30
4
2007/08
484
18
26.89
30
2
2008/09
493
18
27.39
31
3
2009/10
486
18
27.00
30
2
2010/11
478
18
26.56
30
1
2011/12
480
18
26.67
30
3
2012/13
531
19
27.95
31
8
2013/14
551
20
27.55
31
8
2014/15
538
20
26.90
30
5
2015/16
518
19
27.26
30
2
2016/17
525
19
27.63
30
7
2017/18
530
19
27.89
30
9
2019/20
594
20
29.70
31
16
2020/21
596
20
29.80
31
17
2021/22
602
20
30.10
31
17
2022/23
597
23
25.96
32
5
2023/24
619
24
25.79
28
0
2024/25
611
23
26.57
29
0
2025/26
607
23
26.39
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1982/83: 188 in 1981/82 → 301, +113 pupils.
Biggest loss in a single year: 2015/16: 538 in 2014/15 → 518, -20 pupils.
Largest single-class increase: 3rd Class in 2023/24 (143 → 153, +10).
Largest single-class decrease: 3rd Class in 2024/25 (153 → 138, -15).
Largest cohort-step gain: 5th → 6th in 2023/24 (151 → 160, +9).
Overall: 102 (1980/81) → 614 (2025/26), 512.
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
138
153
145.7
6
4th Class
141
154
148.7
6
5th Class
150
161
155.0
6
6th Class
150
168
157.2
6
Total
102
619
459.2
37
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).