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
16.90
2025/26
Mainstream classes
20
2025/26
Largest class group
19
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
299
14
21.36
25
0
2007/08
308
15
20.53
24
0
2008/09
317
15
21.13
26
0
2009/10
328
16
20.50
24
0
2010/11
320
16
20.00
22
0
2011/12
323
16
20.19
22
0
2012/13
324
16
20.25
23
0
2013/14
349
17
20.53
23
0
2014/15
367
18
20.39
23
0
2015/16
395
19
20.79
24
0
2016/17
407
20
20.35
23
0
2017/18
395
20
19.75
23
0
2019/20
385
19
20.26
23
0
2020/21
377
20
18.85
22
0
2021/22
384
20
19.20
23
0
2022/23
375
20
18.75
21
0
2023/24
357
20
17.85
22
0
2024/25
352
20
17.60
23
0
2025/26
338
20
16.90
19
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1979/80: 443 in 1978/79 → 499, +56 pupils.
Biggest loss in a single year: 1993/94: 552 in 1983/84 → 314, -238 pupils.
Largest single-class increase: 1st Class in 2021/22 (84 → 102, +18).
Largest single-class decrease: Junior Infants in 2022/23 (106 → 82, -24).
Largest cohort-step gain: SI → 1st in 2022/23 (86 → 97, +11).
Largest cohort-step loss: 2nd → 3rd in 2025/26 (105 → 1, -104).
Overall: 447 (1974/75) → 360 (2025/26), -87.
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
80
106
87.3
6
Senior Infants
83
103
92.5
6
1st Class
84
105
94.0
6
2nd Class
90
105
96.8
6
3rd Class
1
1
1.0
1
4th Class
2
2
2.0
1
5th Class
2
2
2.0
1
6th Class
1
1
1.0
1
Total
257
552
371.4
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).