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
22.91
2025/26
Mainstream classes
11
2025/26
Largest class group
32
2025/26
Classes with 30+ pupils
1
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
240
9
26.67
34
2
2007/08
282
10
28.20
33
3
2008/09
290
11
26.36
30
2
2009/10
308
11
28.00
32
3
2010/11
348
13
26.77
31
3
2011/12
354
13
27.23
32
4
2012/13
345
13
26.54
32
3
2013/14
313
13
24.08
31
2
2014/15
346
13
26.62
30
2
2015/16
317
13
24.38
32
3
2016/17
307
12
25.58
30
2
2017/18
339
13
26.08
30
3
2019/20
327
13
25.15
31
2
2020/21
306
13
23.54
29
0
2021/22
298
12
24.83
33
1
2022/23
276
12
23.00
33
1
2023/24
276
11
25.09
33
2
2024/25
269
11
24.45
33
1
2025/26
252
11
22.91
32
1
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1980/81: 276 in 1979/80 → 401, +125 pupils.
Biggest loss in a single year: 1993/94: 509 in 1983/84 → 362, -147 pupils.
Largest single-class increase: 6th Class in 2021/22 (29 → 52, +23).
Largest single-class decrease: 5th Class in 2021/22 (53 → 29, -24).
Largest cohort-step gain: SI → 1st in 2025/26 (24 → 28, +4).
Largest cohort-step loss: 2nd → 3rd in 2025/26 (26 → 24, -2).
Overall: 276 (1979/80) → 264 (2025/26), -12.
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
22
46
31.2
6
Senior Infants
23
42
29.2
6
1st Class
24
33
28.8
6
2nd Class
26
53
33.8
6
3rd Class
24
52
37.8
6
4th Class
28
54
38.7
6
5th Class
27
55
41.2
6
6th Class
28
55
40.8
6
Total
235
509
309.7
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).