Planning area in Dublin

Portmarnock

Schools in County Dublin in this planning area.

Other planning areas in Dublin Lucan · 17 Killester–Raheny–Clontarf · 26 Cabra–Phibsboro–D7 · 22 Ballinteer–Stepaside–DLR · 16 Swords · 15 Tallaght · 18 Drumcondra–Marino–Dublin1 · 25 Donaghmede–Howth–D13 · 16 Firhouse–Oldbawn · 16 Dunlaoghaire · 14 Sallynoggin–Killiney–DLR · 15 Rathfarnham · 11 Clondalkin–D22 · 12 Dolphin's Barn–D12 · 17 Blanchardstown–West–D15 · 7 BlanchardstownVge–D15 · 11 Balbriggan · 11 Dublin–8 · 16 Dublin6–Clonskeagh · 13 Newcastle–Rathcoole · 8 Goatstown–Stillorgan–DLR · 10 Beaumont–CoolockD5 · 10 Dublin–6w · 7 Dublin2–Dublin4 · 12 Ballyfermot–D10 · 11 Rush&Lusk · 8 FinglasEast–BallymunD11 · 10 Mulhuddart–Tyrrelstown–D15 · 7 Malahide–Nevinstown · 5 Whitehall–SantryD9 · 10 Carpenterstown–D15 · 3 Booterstown–Blackrock · 6 Skerries · 8 Castleknock–D15 · 4 Scribblestown–FinglasWest · 10 Donabate · 4 Palmerstown–Ronanstown–D20–22 · 6 Ballybrack–Shankill–DLR · 5 Darndale–D17 · 5 Kilternan · 3 Ashbourne · 3 Blessington · 1

Schools: 5; of 459 in Dublin
Pupils: 1,895; 1% of Dublin's pupils
Since 2015/16: +46.9%; 1,290 pupils in 2015/16
Average school size: 379.0; Dublin: 289.6
Average class size: 24.43; Dublin: 22.23

Trends in Portmarnock

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

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.

Malahide / Portmarnock Educate Together National SchoolDublin 17 · opened 2014/15 377

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 Portmarnock, 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 Portmarnock'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.

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