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
24.33
2025/26
Mainstream classes
15
2025/26
Largest class group
31
2025/26
Classes with 30+ pupils
3
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
349
12
29.08
31
7
2007/08
357
13
27.46
30
2
2008/09
350
13
26.92
31
2
2009/10
330
13
25.38
28
0
2010/11
356
13
27.38
30
1
2011/12
344
12
28.67
30
4
2012/13
348
12
29.00
30
6
2013/14
330
12
27.50
30
3
2014/15
329
12
27.42
31
3
2015/16
347
12
28.92
31
7
2016/17
341
13
26.23
30
3
2017/18
359
13
27.62
32
7
2019/20
356
14
25.43
32
4
2020/21
357
14
25.50
32
3
2021/22
355
14
25.36
30
1
2022/23
350
14
25.00
30
2
2023/24
357
14
25.50
31
2
2024/25
353
15
23.53
29
0
2025/26
365
15
24.33
31
3
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1981/82: 210 in 1980/81 → 336, +126 pupils.
Biggest loss in a single year: 2006/07: 383 in 2005/06 → 353, -30 pupils.
Largest single-class increase: 4th Class in 2025/26 (88 → 101, +13).
Largest single-class decrease: 5th Class in 2023/24 (94 → 83, -11).
Largest cohort-step gain: 3rd → 4th in 2025/26 (93 → 101, +8).
Largest cohort-step loss: 4th → 5th in 2024/25 (89 → 86, -3).
Overall: 210 (1980/81) → 371 (2025/26), 161.
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
84
93
88.7
6
4th Class
85
101
90.0
6
5th Class
83
94
88.5
6
6th Class
86
96
90.0
6
Total
210
445
367.2
37
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).