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
22.20
2025/26
Mainstream classes
15
2025/26
Largest class group
25
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
349
12
29.08
33
4
2007/08
353
13
27.15
32
3
2008/09
343
13
26.38
31
2
2009/10
370
13
28.46
32
3
2010/11
349
14
24.93
30
2
2011/12
376
14
26.86
31
3
2012/13
348
14
24.86
29
0
2013/14
374
14
26.71
30
2
2014/15
344
14
24.57
29
0
2015/16
366
14
26.14
32
3
2016/17
340
14
24.29
30
1
2017/18
367
14
26.21
31
3
2019/20
369
14
26.36
32
4
2020/21
345
14
24.64
29
0
2021/22
356
14
25.43
31
1
2022/23
346
14
24.71
30
1
2023/24
339
15
22.60
26
0
2024/25
333
15
22.20
26
0
2025/26
333
15
22.20
25
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1978/79: 355 in 1977/78 → 387, +32 pupils.
Biggest loss in a single year: 1975/76: 519 in 1974/75 → 417, -102 pupils.
Largest single-class increase: 5th Class in 2024/25 (63 → 95, +32).
Largest single-class decrease: 5th Class in 2023/24 (88 → 63, -25).
Largest cohort-step gain: 4th → 5th in 2024/25 (76 → 95, +19).
Largest cohort-step loss: 5th → 6th in 2025/26 (95 → 93, -2).
Overall: 519 (1974/75) → 345 (2025/26), -174.
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
0
0
0.0
1
Senior Infants
0
0
0.0
1
1st Class
0
0
0.0
1
2nd Class
44
68
57.2
6
3rd Class
49
79
62.2
6
4th Class
59
80
68.8
6
5th Class
63
95
77.5
6
6th Class
65
93
78.8
6
Total
230
519
345.1
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).