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
20.10
2025/26
Mainstream classes
10
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
577
21
27.48
31
3
2007/08
555
21
26.43
30
4
2008/09
476
20
23.80
28
0
2009/10
468
17
27.53
31
3
2010/11
454
17
26.71
30
3
2011/12
442
16
27.62
30
2
2012/13
460
17
27.06
30
1
2013/14
475
17
27.94
30
4
2014/15
480
17
28.24
30
3
2015/16
462
17
27.18
29
0
2016/17
439
17
25.82
30
1
2017/18
422
16
26.38
30
2
2019/20
377
16
23.56
30
1
2020/21
334
15
22.27
25
0
2021/22
300
13
23.08
26
0
2022/23
273
12
22.75
26
0
2023/24
252
11
22.91
25
0
2024/25
232
10
23.20
27
0
2025/26
201
10
20.10
25
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2002/03: 624 in 2001/02 → 762, +138 pupils.
Biggest loss in a single year: 2005/06: 935 in 2004/05 → 587, -348 pupils.
Largest single-class increase: Junior Infants in 2024/25 (52 → 63, +11).
Largest single-class decrease: Junior Infants in 2025/26 (63 → 37, -26).
Largest cohort-step gain: SI → 1st in 2023/24 (60 → 64, +4).
Largest cohort-step loss: 2nd → 3rd in 2021/22 (99 → 0, -99).
Overall: 190 (1974/75) → 213 (2025/26), 23.
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
37
67
57.5
6
Senior Infants
53
73
63.5
6
1st Class
52
96
70.3
6
2nd Class
63
99
78.3
6
3rd Class
0
0
0.0
1
4th Class
0
0
0.0
1
5th Class
0
0
0.0
1
6th Class
0
0
0.0
1
Total
190
935
400.5
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).