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
19.10
2025/26
Mainstream classes
10
2025/26
Largest class group
23
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
201
10
20.10
28
0
2007/08
212
10
21.20
31
1
2008/09
207
10
20.70
30
1
2009/10
199
10
19.90
27
0
2010/11
197
9
21.89
29
0
2011/12
192
10
19.20
26
0
2012/13
183
9
20.33
29
0
2013/14
178
9
19.78
28
0
2014/15
161
8
20.12
27
0
2015/16
164
8
20.50
26
0
2016/17
157
8
19.62
26
0
2017/18
165
8
20.62
27
0
2019/20
192
9
21.33
26
0
2020/21
190
9
21.11
26
0
2021/22
187
9
20.78
26
0
2022/23
191
9
21.22
26
0
2023/24
188
9
20.89
26
0
2024/25
185
10
18.50
25
0
2025/26
191
10
19.10
23
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2005/06: 185 in 2004/05 → 212, +27 pupils.
Biggest loss in a single year: 1993/94: 308 in 1983/84 → 262, -46 pupils.
Largest single-class increase: 2nd Class in 2022/23 (14 → 32, +18).
Largest single-class decrease: 2nd Class in 2021/22 (25 → 14, -11).
Largest cohort-step gain: 5th → 6th in 2025/26 (17 → 22, +5).
Largest cohort-step loss: 3rd → 4th in 2025/26 (25 → 23, -2).
Overall: 359 (1974/75) → 191 (2025/26), -168.
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
19
25
22.7
6
Senior Infants
20
33
24.5
6
1st Class
16
31
22.8
6
2nd Class
14
32
23.0
6
3rd Class
17
32
24.8
6
4th Class
16
32
23.5
6
5th Class
17
34
24.0
6
6th Class
22
26
23.3
6
Total
157
381
232.6
43
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).