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
22.40
2025/26
Mainstream classes
10
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
222
8
27.75
38
2
2007/08
231
8
28.88
38
2
2008/09
235
9
26.11
30
2
2009/10
237
9
26.33
30
2
2010/11
237
9
26.33
30
2
2011/12
244
9
27.11
29
0
2012/13
256
10
25.60
29
0
2013/14
282
10
28.20
33
4
2014/15
315
12
26.25
32
1
2015/16
341
13
26.23
32
1
2016/17
350
14
25.00
32
1
2017/18
370
13
28.46
37
5
2019/20
359
15
23.93
34
2
2020/21
352
14
25.14
32
2
2021/22
338
14
24.14
32
2
2022/23
296
13
22.77
31
1
2023/24
261
13
20.08
30
1
2024/25
257
11
23.36
34
1
2025/26
224
10
22.40
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2003/04: 128 in 2002/03 → 167, +39 pupils.
Biggest loss in a single year: 2022/23: 344 in 2021/22 → 306, -38 pupils.
Largest single-class increase: 4th Class in 2025/26 (29 → 48, +19).
Largest single-class decrease: 5th Class in 2022/23 (48 → 31, -17).
Largest cohort-step gain: 5th → 6th in 2025/26 (32 → 37, +5).
Largest cohort-step loss: 1st → 2nd in 2023/24 (48 → 44, -4).
Overall: 20 (1998/99) → 242 (2025/26), 222.
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
21
45
29.8
6
Senior Infants
22
45
32.2
6
1st Class
22
48
33.7
6
2nd Class
26
49
36.5
6
3rd Class
30
49
36.8
6
4th Class
29
48
38.8
6
5th Class
31
60
41.0
6
6th Class
30
57
43.0
6
Total
20
380
242.6
28
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).