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
18.91
2025/26
Mainstream classes
11
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
170
8
21.25
25
0
2007/08
188
8
23.50
29
0
2008/09
185
8
23.12
26
0
2009/10
193
8
24.12
28
0
2010/11
204
8
25.50
32
1
2011/12
226
8
28.25
35
3
2012/13
219
8
27.38
34
3
2013/14
229
8
28.62
33
4
2014/15
235
9
26.11
33
2
2015/16
224
9
24.89
35
2
2016/17
229
8
28.62
32
4
2017/18
229
9
25.44
30
2
2019/20
228
9
25.33
30
1
2020/21
224
9
24.89
34
3
2021/22
210
9
23.33
29
0
2022/23
229
10
22.90
32
3
2023/24
213
11
19.36
33
1
2024/25
204
10
20.40
31
1
2025/26
208
11
18.91
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1977/78: 405 in 1976/77 → 452, +47 pupils.
Biggest loss in a single year: 1993/94: 453 in 1983/84 → 260, -193 pupils.
Largest single-class increase: Junior Infants in 2025/26 (18 → 35, +17).
Largest single-class decrease: 3rd Class in 2023/24 (35 → 22, -13).
Largest cohort-step gain: JI → SI in 2022/23 (19 → 29, +10).
Largest cohort-step loss: JI → SI in 2023/24 (25 → 19, -6).
Overall: 335 (1974/75) → 225 (2025/26), -110.
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
18
35
23.2
6
Senior Infants
19
29
22.7
6
1st Class
20
34
25.5
6
2nd Class
22
34
27.8
6
3rd Class
22
35
28.8
6
4th Class
24
34
28.8
6
5th Class
26
32
29.7
6
6th Class
28
33
31.0
6
Total
175
505
266.6
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).