How many pupils go to Holy Trinity Sen NS?

Holy Trinity Sen NS has 397 pupils: 198 boys and 199 girls, according to the Department of Education's latest figures.

Is Holy Trinity Sen NS a mixed school?

Yes. Holy Trinity Sen NS takes both boys and girls.

What is the ethos of Holy Trinity Sen NS?

Holy Trinity Sen NS has a Catholic ethos. The ethos is set by the school's patron and shapes religious education and some admission rules.

Does Holy Trinity Sen NS teach through Irish?

No. Holy Trinity Sen NS teaches through English, with Irish taught as a subject.

Is Holy Trinity Sen NS a DEIS school?

No. Holy Trinity Sen NS is not part of the DEIS programme.

Where can I read Holy Trinity Sen NS's inspection reports?

The Department of Education publishes school inspection reports on gov.ie. Search there by Holy Trinity Sen NS's roll number, 19406J, or use the link on this page.

What other primary schools are near Holy Trinity Sen NS?

The closest is Scoil Bhride. The table on this page compares the nearest schools by distance, size, ethos and language.

Holy Trinity Sen NS

Dublin 13, Co. Dublin

397 pupilsMixedCatholic

Work-to-rule: no supervision before or after school while it lasts. Check with the school. What it means

At a glance

Holy Trinity Sen NS is a primary school in Dublin 13, Co. Dublin (Eircode D13 WY00). David Henry is the principal of Holy Trinity Sen NS, according to the Department of Education's 2025/26 schools list.

Pupils: 397
Boys and girls: Mixed · 198 boys, 199 girls
Ethos: Catholic
Language: English-medium
DEIS: No
Type: Mainstream
Roll number: 19406J

Inspection reports for this school from the Department of Education, on gov.ie

Compare with another school

Explained: school ethos · how admissions work · how to choose a school

Starting junior infants in September 2027

We haven't found Holy Trinity Sen NS's junior infant enrolment dates for September 2027 yet. Most primary schools take applications in the autumn and winter before; the school's admission notice has the exact window.

We check school websites every week and add dates as soon as they're published.

When can my child start school? · How admissions work

Questions parents ask

Where is Holy Trinity Sen NS?: Holy Trinity Sen NS is a primary school in Dublin 13, Co. Dublin (Eircode D13 WY00).
Who is the principal of Holy Trinity Sen NS?: David Henry is the principal of Holy Trinity Sen NS, according to the Department of Education's 2025/26 schools list.
How many pupils go to Holy Trinity Sen NS?: Holy Trinity Sen NS has 397 pupils: 198 boys and 199 girls, according to the Department of Education's latest figures.
Is Holy Trinity Sen NS a mixed school?: Yes. Holy Trinity Sen NS takes both boys and girls.
What is the ethos of Holy Trinity Sen NS?: Holy Trinity Sen NS has a Catholic ethos. The ethos is set by the school's patron and shapes religious education and some admission rules.
Does Holy Trinity Sen NS teach through Irish?: No. Holy Trinity Sen NS teaches through English, with Irish taught as a subject.
Is Holy Trinity Sen NS a DEIS school?: No. Holy Trinity Sen NS is not part of the DEIS programme.
Where can I read Holy Trinity Sen NS's inspection reports?: The Department of Education publishes school inspection reports on gov.ie. Search there by Holy Trinity Sen NS's roll number, 19406J, or use the link on this page.
What other primary schools are near Holy Trinity Sen NS?: The closest is Scoil Bhride. The table on this page compares the nearest schools by distance, size, ethos and language.

Closest schools

Holy Trinity Sen NS compared with other schools in the area
School	Distance	Pupils	Boys and girls	Ethos	Irish-medium	DEIS
Holy Trinity Sen NSThis school		397	Mixed	Catholic	No	No
Scoil BhrideDublin 13	100 m	365	Mixed	Catholic	No	No
Scoil Naomh ColmcilleDublin 13	100 m	217	Mixed	Catholic	No	No
St Kevins Junior NSDublin 13	200 m	149	Mixed	Catholic	No	No
Stapolin Educate Together National SchoolDublin 13	800 m	340	Mixed	Multi-denominational	No	No
St Benedicts and St Marys National SchoolDublin 5	900 m	165	Mixed	Catholic	No	Yes
St Michael's House Special National School FoxfieldDublin 5	1.1 km	61	Mixed	Multi-denominational	No	No

Straight-line distances. Compare with the two closest · See more schools near here.

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Contact

Grange Road
Donaghmede
Dublin 13
D13WY00

Principal: David Henry on the Department of Education's 2025/26 schools list
Phone: 01 847 4695
Email: [email protected]
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Secondary schools near here

For 5th and 6th class families: open nights, application dates and costs for the secondary schools closest to Holy Trinity Sen NS, on our sister site.

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Next school holidays

In 8 daysOctober mid-term breakMon, 26 October to Fri 30 October 2026
In 9 weeksChristmas holidaysWed 23 December 2026 to Tue 5 January 2027
In 18 weeksFebruary mid-term breakThu, 18 February to Fri 19 February 2027

These dates are set for every primary school in Ireland. Check with Holy Trinity Sen NS for any extra days off and the last day in June. Get reminders · All term dates · Add to Google Calendar