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
25.28
2025/26
Mainstream classes
18
2025/26
Largest class group
30
2025/26
Classes with 30+ pupils
2
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
435
16
27.19
30
3
2007/08
428
16
26.75
29
0
2008/09
430
16
26.88
29
0
2009/10
420
15
28.00
29
0
2010/11
424
15
28.27
29
0
2011/12
430
16
26.88
29
0
2012/13
444
16
27.75
30
2
2013/14
477
17
28.06
31
7
2014/15
471
17
27.71
31
5
2015/16
475
17
27.94
31
5
2016/17
475
18
26.39
29
0
2017/18
486
18
27.00
29
0
2019/20
486
18
27.00
31
4
2020/21
500
18
27.78
32
8
2021/22
463
18
25.72
30
2
2022/23
470
18
26.11
29
0
2023/24
457
18
25.39
29
0
2024/25
444
18
24.67
29
0
2025/26
455
18
25.28
30
2
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1976/77: 272 in 1975/76 → 454, +182 pupils.
Biggest loss in a single year: 1979/80: 650 in 1978/79 → 482, -168 pupils.
Largest single-class increase: 5th Class in 2022/23 (117 → 129, +12).
Largest single-class decrease: 5th Class in 2023/24 (129 → 107, -22).
Largest cohort-step gain: 4th → 5th in 2022/23 (122 → 129, +7).
Largest cohort-step loss: 3rd → 4th in 2021/22 (125 → 122, -3).
Overall: 272 (1975/76) → 461 (2025/26), 189.
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
0
0
0.0
1
3rd Class
108
125
113.8
6
4th Class
108
122
114.0
6
5th Class
107
129
117.3
6
6th Class
107
136
121.7
6
Total
272
650
460.8
42
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).