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
17.60
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
216
12
18.00
26
0
2007/08
244
14
17.43
30
1
2008/09
235
14
16.79
24
0
2009/10
233
13
17.92
26
0
2010/11
246
12
20.50
30
1
2011/12
261
12
21.75
25
0
2012/13
261
12
21.75
29
0
2013/14
267
12
22.25
32
2
2014/15
265
13
20.38
32
1
2015/16
285
14
20.36
27
0
2016/17
283
14
20.21
26
0
2017/18
257
13
19.77
29
0
2019/20
235
13
18.08
27
0
2020/21
238
12
19.83
31
1
2021/22
217
12
18.08
28
0
2022/23
200
11
18.18
27
0
2023/24
187
11
17.00
28
0
2024/25
179
10
17.90
22
0
2025/26
176
10
17.60
23
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2007/08: 242 in 2006/07 → 270, +28 pupils.
Biggest loss in a single year: 1993/94: 574 in 1982/83 → 348, -226 pupils.
Largest single-class increase: 6th Class in 2025/26 (21 → 34, +13).
Largest single-class decrease: 1st Class in 2021/22 (34 → 20, -14).
Largest cohort-step gain: 4th → 5th in 2024/25 (26 → 31, +5).
Largest cohort-step loss: JI → SI in 2023/24 (23 → 18, -5).
Overall: 975 (1974/75) → 188 (2025/26), -787.
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
20
34
24.0
6
Senior Infants
18
33
22.8
6
1st Class
17
34
24.5
6
2nd Class
18
32
24.0
6
3rd Class
19
33
25.7
6
4th Class
19
34
25.8
6
5th Class
21
31
27.8
6
6th Class
21
34
27.0
6
Total
188
975
368.0
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).