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
24.30
2025/26
Mainstream classes
20
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
599
22
27.23
32
2
2007/08
603
23
26.22
29
0
2008/09
586
23
25.48
28
0
2009/10
602
22
27.36
31
5
2010/11
600
22
27.27
33
5
2011/12
599
22
27.23
32
4
2012/13
601
22
27.32
31
4
2013/14
639
23
27.78
31
4
2014/15
632
23
27.48
30
1
2015/16
623
23
27.09
30
2
2016/17
607
23
26.39
28
0
2017/18
573
22
26.05
28
0
2019/20
532
22
24.18
29
0
2020/21
528
21
25.14
29
0
2021/22
501
21
23.86
28
0
2022/23
508
21
24.19
28
0
2023/24
491
21
23.38
27
0
2024/25
487
21
23.19
26
0
2025/26
486
20
24.30
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1976/77: 551 in 1975/76 → 601, +50 pupils.
Biggest loss in a single year: 1993/94: 629 in 1983/84 → 529, -100 pupils.
Largest single-class increase: Junior Infants in 2024/25 (123 → 141, +18).
Largest single-class decrease: Junior Infants in 2025/26 (141 → 123, -18).
Largest cohort-step gain: SI → 1st in 2022/23 (129 → 135, +6).
Largest cohort-step loss: 2nd → 3rd in 2023/24 (137 → 0, -137).
Overall: 551 (1975/76) → 498 (2025/26), -53.
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
115
141
124.3
6
Senior Infants
116
139
127.0
6
1st Class
112
135
125.3
6
2nd Class
114
137
127.2
6
3rd Class
0
0
0.0
1
4th Class
0
0
0.0
1
5th Class
0
0
0.0
1
6th Class
0
0
0.0
1
Total
498
651
582.5
40
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).