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
25.38
2025/26
Mainstream classes
24
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
658
23
28.61
31
6
2007/08
670
24
27.92
31
6
2008/09
673
25
26.92
31
1
2009/10
655
24
27.29
32
5
2010/11
644
24
26.83
32
5
2011/12
594
22
27.00
31
4
2012/13
605
21
28.81
31
9
2013/14
619
22
28.14
31
5
2014/15
608
22
27.64
31
2
2015/16
633
23
27.52
30
1
2016/17
637
23
27.70
30
2
2017/18
675
24
28.12
31
3
2019/20
724
26
27.85
30
3
2020/21
720
26
27.69
31
3
2021/22
696
26
26.77
30
2
2022/23
666
25
26.64
30
1
2023/24
642
25
25.68
28
0
2024/25
633
25
25.32
28
0
2025/26
609
24
25.38
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1979/80: 164 in 1978/79 → 387, +223 pupils.
Biggest loss in a single year: 1993/94: 854 in 1982/83 → 604, -250 pupils.
Largest single-class increase: 5th Class in 2023/24 (151 → 178, +27).
Largest single-class decrease: 5th Class in 2022/23 (175 → 151, -24).
Largest cohort-step gain: 5th → 6th in 2023/24 (151 → 152, +1).
Largest cohort-step loss: 5th → 6th in 2024/25 (178 → 171, -7).
Overall: 164 (1978/79) → 609 (2025/26), 445.
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
152
183
160.7
6
4th Class
149
179
161.7
6
5th Class
150
189
167.0
6
6th Class
152
197
171.7
6
Total
164
854
623.0
38
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).