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ST HELENS SENIOR N S

Roll number: 19762I Limetree Ave, Portmarnock, Co. Dublin

School details

Address
Limetree Ave, Portmarnock, Co. Dublin (D13X326)
Email
[email protected]
Phone
018461808
Principal
Gwyn Bhreathnach
Ethos
Catholic
DEIS
N
Irish classification
No subjects through Irish
Gaeltacht
N
Island
N
Local authority
Fingal County Council
School patron
Archbishop of Dublin
School type
Ordinary with Special Classes
School level
Senior
Planning area
Portmarnock

Class size history

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
24.53
2025/26
Mainstream classes
15
2025/26
Largest class group
30
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+
2006/07 264 10 26.40 30 2
2007/08 262 10 26.20 29 0
2008/09 241 10 24.10 29 0
2009/10 224 9 24.89 29 0
2010/11 226 8 28.25 29 0
2011/12 224 8 28.00 29 0
2012/13 226 8 28.25 30 1
2013/14 234 8 29.25 33 2
2014/15 244 9 27.11 34 4
2015/16 267 9 29.67 34 3
2016/17 288 10 28.80 34 3
2017/18 312 11 28.36 34 2
2019/20 331 13 25.46 29 0
2020/21 357 13 27.46 30 1
2021/22 366 14 26.14 30 1
2022/23 369 15 24.60 29 0
2023/24 372 15 24.80 31 2
2024/25 359 16 22.44 25 0
2025/26 368 15 24.53 30 3

Data highlights

Key numbers to spot outliers or notable changes.

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 77 102 89.0 6
4th Class 81 103 90.7 6
5th Class 86 108 94.3 6
6th Class 83 101 93.7 6
Total 129 492 306.1 36

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).

Cohort 2025/26
JI 2025/26 0

Raw data by year

Year Female Male JI SI 1st 2nd 3rd 4th 5th 6th Total
1981/82 66 63 – – – – – – – – 129
1982/83 115 119 – – – – – – – – 234
1983/84 175 179 – – – – – – – – 354
1993/94 215 277 – – – – – – – – 492
1994/95 193 242 – – – – – – – – 435
1995/96 177 217 – – – – – – – – 394
1996/97 162 205 – – – – – – – – 367
1997/98 150 182 – – – – – – – – 332
1998/99 143 166 – – – – – – – – 309
1999/00 136 165 – – – – – – – – 301
2000/01 130 169 – – – – – – – – 299
2001/02 138 164 – – – – – – – – 302
2002/03 138 163 – – – – – – – – 301
2003/04 129 152 – – – – – – – – 281
2004/05 140 138 – – – – – – – – 278
2005/06 144 143 – – – – – – – – 287
2006/07 129 144 – – – – – – – – 273
2007/08 130 140 – – – – – – – – 270
2008/09 112 136 – – – – – – – – 248
2009/10 106 118 – – – – – – – – 224
2010/11 104 122 – – – – – – – – 226
2011/12 103 121 – – – – – – – – 224
2012/13 102 124 – – – – – – – – 226
2013/14 113 121 – – – – – – – – 234
2014/15 119 125 – – – – – – – – 244
2015/16 132 135 – – – – – – – – 267
2016/17 143 145 – – – – – – – – 288
2017/18 143 169 – – – – – – – – 312
2018/19 147 179 – – – – – – – – 326
2019/20 157 174 – – – – – – – – 331
2020/21 164 193 – – – – 102 86 86 83 357
2021/22 176 190 – – – – 84 103 87 92 366
2022/23 187 188 – – – – 86 88 106 91 375
2023/24 180 203 – – – – 92 90 89 101 383
2024/25 175 196 – – – – 77 96 90 96 371
2025/26 187 194 – – – – 93 81 108 99 381