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
14.62
2025/26
Mainstream classes
13
2025/26
Largest class group
22
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
380
17
22.35
35
1
2007/08
376
16
23.50
27
0
2008/09
367
16
22.94
31
1
2009/10
376
15
25.07
32
4
2010/11
352
16
22.00
32
1
2011/12
328
15
21.87
28
0
2012/13
333
14
23.79
28
0
2013/14
309
14
22.07
30
1
2014/15
293
13
22.54
34
1
2015/16
288
13
22.15
30
1
2016/17
287
13
22.08
27
0
2017/18
284
16
17.75
26
0
2019/20
265
15
17.67
27
0
2020/21
242
16
15.12
25
0
2021/22
225
14
16.07
21
0
2022/23
222
14
15.86
22
0
2023/24
195
14
13.93
18
0
2024/25
193
13
14.85
22
0
2025/26
190
13
14.62
22
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1976/77: 918 in 1975/76 → 956, +38 pupils.
Biggest loss in a single year: 1993/94: 895 in 1982/83 → 793, -102 pupils.
Largest single-class increase: 3rd Class in 2022/23 (21 → 31, +10).
Largest single-class decrease: Junior Infants in 2021/22 (32 → 20, -12).
Largest cohort-step gain: SI → 1st in 2025/26 (16 → 27, +11).
Largest cohort-step loss: 1st → 2nd in 2021/22 (43 → 31, -12).
Overall: 918 (1975/76) → 208 (2025/26), -710.
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
13
32
19.7
6
Senior Infants
16
38
24.2
6
1st Class
17
43
30.2
6
2nd Class
22
32
26.7
6
3rd Class
21
34
27.7
6
4th Class
23
35
29.2
6
5th Class
24
37
30.0
6
6th Class
23
34
27.7
6
Total
207
956
515.4
40
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).