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
23.27
2025/26
Mainstream classes
11
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
315
11
28.64
31
5
2007/08
326
12
27.17
32
3
2008/09
306
12
25.50
27
0
2009/10
298
12
24.83
30
1
2010/11
283
11
25.73
29
0
2011/12
294
11
26.73
31
2
2012/13
299
11
27.18
32
2
2013/14
286
11
26.00
30
3
2014/15
292
11
26.55
31
3
2015/16
294
11
26.73
34
2
2016/17
302
11
27.45
32
3
2017/18
299
11
27.18
33
5
2019/20
288
11
26.18
31
1
2020/21
289
12
24.08
29
0
2021/22
283
11
25.73
30
1
2022/23
280
12
23.33
29
0
2023/24
280
12
23.33
28
0
2024/25
267
12
22.25
27
0
2025/26
256
11
23.27
28
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1975/76: 411 in 1974/75 → 501, +90 pupils.
Biggest loss in a single year: 1993/94: 613 in 1983/84 → 483, -130 pupils.
Largest single-class increase: 6th Class in 2021/22 (32 → 47, +15).
Largest single-class decrease: 2nd Class in 2024/25 (49 → 32, -17).
Largest cohort-step gain: SI → 1st in 2022/23 (41 → 46, +5).
Largest cohort-step loss: 3rd → 4th in 2025/26 (47 → 44, -3).
Overall: 411 (1974/75) → 262 (2025/26), -149.
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
19
39
27.7
6
Senior Infants
23
41
32.3
6
1st Class
30
46
34.8
6
2nd Class
31
49
36.8
6
3rd Class
31
47
36.5
6
4th Class
31
44
37.7
6
5th Class
32
46
37.7
6
6th Class
32
47
37.3
6
Total
262
631
389.4
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).