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School planning area

Portmarnock

5 primary schools and 1,895 pupils in 2025/26, in County Dublin.

Pupils in 2025/26
1,895
−9 on 2024/25
Since 2015/16
+46.9%
1,290 pupils in 2015/16
Schools
5
No change on 2024/25
Average class size
24.43
Average school size: 379.0

Each year counts the schools in this planning area today, plus any that closed from 2023/24. Dotted lines bridge 1983/84 to 1992/93. 1974/75 is left out because that year's source file is missing five counties.

Earlier years are incomplete

The Department's files only record planning areas from 2023/24, so schools that closed or amalgamated before then aren't counted in any area. The further back you go, the more pupils are missing, and an amalgamation can look like a sudden rise. Across County Dublin, schools with no planning area had 1.5% of pupils in 2015/16, 5.3% in 2005/06 and 36.8% in 1975/76. Known data issues

Pupils

1,895

−9 on 2024/25

1975/762025/26

Schools

5

2 in 1975/76

1975/762025/26

Average pupils per school

379.0

577.5 in 1975/76

1975/762025/26

Average class size

24.43

+0.18 on 2024/25

2006/072025/26

Pupils in these schools

Junior infants, girls and boys, and Irish-medium schools over time, for the same schools as the trends above.

Area figures by year (CSV) Each school by year (CSV)

Junior infants

Pupils starting school each year. Class-by-class figures start in 2020/21. 203 in 2025/26, −21 on 2024/25.

Girls and boys

From 1976/77: earlier files don't split every school's pupils into girls and boys.

Irish-medium schools

No school in this area teaches all subjects through Irish.

Growing and falling since 2015/16

Each school's change in pupils over 10 years, from 2015/16 to 2025/26. A change of 10% or more either way counts as growing or falling.

Every school's change

4 schools with figures for both years

Schools still filling their classes in 2015/16, and schools opened since, are listed separately.

0fell by 10% or more
1within 10%
3grew by 10% or more
Down 25% or more · 0Down 10 to 25% · 0Within 10% · 1Up 10 to 25% · 1Up 25% or more · 2

Sort the table below by the change column to see which schools grew or fell most.

Newer schools

1 school still filling its classes in 2015/16 or opened since, with 377 pupils. It isn’t in the figures above.

Class sizes

Mainstream class groups only. The source does not identify which standard/year group each class group belongs to.

Average class size
24.43
Mainstream classes
76
Classes of 30 or more
4
Schools with a class of 30+
2

Teachers

Teachers in the 5 mainstream primary schools here, 2006/07 to 2025/26. Class teachers are counted every year; all teaching posts where they're known.

How we count teachers
Class teachers in 2025/26
76
Up 44 since 2006/07, while pupils rose 120%
Teaching posts in 2025/26
about 115
Estimate: 76 class teachers, 6 principals and deputies, 25 special education and 8 special class teachers
Teachers in 2015/16
70
The Department's last count of every teacher
Since 2024/25
0 / 1
0 schools gained a class teacher, 1 lost one

Class teachers since 2006/07

One for each mainstream class, every school year

Special schools and special classes

0 special schools in the Portmarnock planning area, and the special classes in the 5 mainstream schools. Special schools aren't counted in the pupils, class sizes or teachers above.

All special schools
Pupils in special schools
0
No special school here
Special classes in 2025/26
8
In 3 of 5 schools. 1 in 2020/21
Allocated for 2026/27
8
In 3 schools
Autism classes
6
75% of special classes

Special classes since 2020/21

In the Portmarnock planning area's mainstream schools, from the NCSE's yearly lists

  • 2020/21 1
  • 2021/22 4
  • 2022/23 5
  • 2023/24 6
  • 2024/25 6
  • 2025/26 8
  • 2026/27 8

2026/27, dashed: allocated for next year.

Sources: Department of Education enrolment lists; NCSE special class lists and special school allocations (CC BY 4.0).

Schools

5 schools, largest first. A dash in the change column means the school had no pupils recorded in that year, usually because it opened later or took a new roll number after an amalgamation.

Change over

Select a column heading to sort

Roll number
Scoil Naomh MearnogPortmarnock 10296G 638
+28.4%
24 26.29 29 0
St Helens Senior N SPortmarnock 19762I 381
+42.7%
15 24.53 30 3
Malahide / Portmarnock Educate Together National SchoolDublin 17 20445D 377
+947.2%
16 23.56 27 0
St Helens Junior N SPortmarnock 19578P 319
−6.2%
13 23.15 30 1
San Nioclas MyraDublin 17 17785K 180
+20.0%
8 22.50 26 0