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
24.12
2025/26
Mainstream classes
16
2025/26
Largest class group
27
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
300
11
27.27
33
5
2007/08
324
11
29.45
33
7
2008/09
327
12
27.25
32
3
2009/10
330
12
27.50
32
6
2010/11
357
13
27.46
31
6
2011/12
365
13
28.08
31
8
2012/13
361
13
27.77
31
6
2013/14
363
13
27.92
32
6
2014/15
352
13
27.08
32
4
2015/16
381
14
27.21
32
5
2016/17
432
16
27.00
31
2
2017/18
443
16
27.69
31
2
2019/20
444
17
26.12
29
0
2020/21
408
17
24.00
29
0
2021/22
402
16
25.12
29
0
2022/23
396
16
24.75
30
1
2023/24
394
16
24.62
28
0
2024/25
388
16
24.25
27
0
2025/26
386
16
24.12
27
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 1980/81: 262 in 1978/79 → 402, +140 pupils.
Biggest loss in a single year: 1993/94: 557 in 1983/84 → 491, -66 pupils.
Largest single-class increase: 5th Class in 2021/22 (99 → 109, +10).
Largest single-class decrease: 4th Class in 2021/22 (111 → 94, -17).
Largest cohort-step gain: 5th → 6th in 2024/25 (96 → 101, +5).
Largest cohort-step loss: 4th → 5th in 2024/25 (97 → 94, -3).
Overall: 98 (1976/77) → 386 (2025/26), 288.
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
94
101
96.7
6
4th Class
94
111
98.5
6
5th Class
94
109
99.5
6
6th Class
91
108
101.0
6
Total
98
557
368.5
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).