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
22.08
2025/26
Mainstream classes
26
2025/26
Largest class group
28
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
234
10
23.40
27
0
2007/08
259
11
23.55
27
0
2008/09
287
12
23.92
30
1
2009/10
294
12
24.50
32
2
2010/11
335
15
22.33
28
0
2011/12
368
16
23.00
27
0
2012/13
440
19
23.16
27
0
2013/14
431
19
22.68
30
1
2014/15
439
19
23.11
29
0
2015/16
476
20
23.80
33
1
2016/17
514
22
23.36
27
0
2017/18
549
24
22.88
27
0
2019/20
604
25
24.16
28
0
2020/21
598
26
23.00
27
0
2021/22
584
26
22.46
26
0
2022/23
578
26
22.23
26
0
2023/24
592
26
22.77
27
0
2024/25
578
26
22.23
27
0
2025/26
574
26
22.08
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2012/13: 373 in 2011/12 → 449, +76 pupils.
Biggest loss in a single year: 1993/94: 368 in 1983/84 → 238, -130 pupils.
Largest single-class increase: 3rd Class in 2025/26 (60 → 79, +19).
Largest single-class decrease: 3rd Class in 2024/25 (75 → 60, -15).
Largest cohort-step gain: 5th → 6th in 2025/26 (62 → 72, +10).
Largest cohort-step loss: JI → SI in 2025/26 (74 → 70, -4).
Overall: 360 (1974/75) → 592 (2025/26), 232.
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
68
80
73.8
6
Senior Infants
65
84
74.5
6
1st Class
61
82
73.0
6
2nd Class
62
76
70.8
6
3rd Class
60
83
72.0
6
4th Class
63
79
71.7
6
5th Class
62
81
74.0
6
6th Class
72
85
77.2
6
Total
197
621
373.2
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).