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
17.10
2025/26
Mainstream classes
10
2025/26
Largest class group
21
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
266
13
20.46
24
0
2007/08
268
13
20.62
25
0
2008/09
265
13
20.38
25
0
2009/10
254
13
19.54
24
0
2010/11
236
12
19.67
27
0
2011/12
223
11
20.27
25
0
2012/13
210
11
19.09
25
0
2013/14
218
10
21.80
25
0
2014/15
218
10
21.80
31
2
2015/16
206
10
20.60
25
0
2016/17
204
11
18.55
27
0
2017/18
203
10
20.30
26
0
2019/20
212
10
21.20
28
0
2020/21
210
11
19.09
29
0
2021/22
205
13
15.77
27
0
2022/23
202
10
20.20
23
0
2023/24
191
10
19.10
21
0
2024/25
173
10
17.30
21
0
2025/26
171
10
17.10
21
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1975/76: 1170 in 1974/75 → 1275, +105 pupils.
Biggest loss in a single year: 1993/94: 471 in 1982/83 → 242, -229 pupils.
Largest single-class increase: 6th Class in 2025/26 (23 → 33, +10).
Largest single-class decrease: Senior Infants in 2024/25 (24 → 15, -9).
Largest cohort-step gain: 4th → 5th in 2022/23 (19 → 23, +4).
Largest cohort-step loss: 2nd → 3rd in 2024/25 (25 → 23, -2).
Overall: 1170 (1974/75) → 183 (2025/26), -987.
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
13
26
19.8
6
Senior Infants
14
29
22.5
6
1st Class
16
32
25.7
6
2nd Class
22
32
26.5
6
3rd Class
20
31
25.5
6
4th Class
19
31
25.3
6
5th Class
21
32
26.0
6
6th Class
21
33
26.5
6
Total
183
1275
373.7
42
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).