Home · By area · Release notes. Enrolment by planning area, local authority, school patron, county.
HOLY TRINITY SEN N S
Roll number: 19406J
Grange Road, Donaghmede, Dublin 13
School details
- Address
- Grange Road, Donaghmede, Dublin 13 (D13WY00)
- Principal
- David Henry
- Ethos
- Catholic
- DEIS
- N
- Irish classification
- No subjects through Irish
- Gaeltacht
- N
- Island
- N
- Local authority
- Dublin City Council
- School patron
- Archbishop of Dublin
- School type
- Ordinary with Special Classes
- School level
- Senior
- Planning area
- Donaghmede_Howth_D13
Preliminary data
The latest year shown (2025/26) is preliminary and subject to revision when the official enrolment figures are released by the Department of Education.
Data highlights
Key numbers to spot outliers or notable changes.
- Biggest gain in a single year: 2009/10: 287 in 2008/09 → 328, +41 pupils.
- Biggest loss in a single year: 1993/94: 517 in 1982/83 → 358, -159 pupils.
- Largest single-class increase: 6th Class in 2022/23 (84 → 102, +18).
- Largest single-class decrease: 3rd Class in 2022/23 (103 → 92, -11).
- Largest cohort-step gain: 3rd → 4th in 2023/24 (92 → 96, +4).
- Largest cohort-step loss: 4th → 5th in 2021/22 (106 → 101, -5).
- Overall: 727 (1974/75) → 397 (2025/26 (preliminary)), -330.
Summary statistics (class-level data)
Min / max / mean enrolment per class across the available years (2020/21–2024/25; preliminary year excluded from class stats).
| Class |
Min |
Max |
Mean |
Years |
| 3rd Class |
92 |
103 |
97.0 |
5 |
| 4th Class |
95 |
106 |
100.0 |
5 |
| 5th Class |
85 |
101 |
97.0 |
5 |
| 6th Class |
84 |
103 |
95.6 |
5 |
| Total |
229 |
727 |
389.3 |
42 |
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
Raw data by year
Years marked (preliminary) are subject to revision when official data are published.
| Year |
Female |
Male |
JI |
SI |
1st |
2nd |
3rd |
4th |
5th |
6th |
Total |
| 1974/75 |
337 |
390 |
– |
– |
– |
– |
– |
– |
– |
– |
727 |
| 1975/76 |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
687 |
| 1976/77 |
325 |
352 |
– |
– |
– |
– |
– |
– |
– |
– |
677 |
| 1977/78 |
314 |
336 |
– |
– |
– |
– |
– |
– |
– |
– |
650 |
| 1978/79 |
332 |
329 |
– |
– |
– |
– |
– |
– |
– |
– |
661 |
| 1979/80 |
322 |
304 |
– |
– |
– |
– |
– |
– |
– |
– |
626 |
| 1980/81 |
294 |
293 |
– |
– |
– |
– |
– |
– |
– |
– |
587 |
| 1981/82 |
271 |
245 |
– |
– |
– |
– |
– |
– |
– |
– |
516 |
| 1982/83 |
261 |
256 |
– |
– |
– |
– |
– |
– |
– |
– |
517 |
| 1993/94 |
158 |
200 |
– |
– |
– |
– |
– |
– |
– |
– |
358 |
| 1994/95 |
146 |
169 |
– |
– |
– |
– |
– |
– |
– |
– |
315 |
| 1995/96 |
115 |
163 |
– |
– |
– |
– |
– |
– |
– |
– |
278 |
| 1996/97 |
136 |
170 |
– |
– |
– |
– |
– |
– |
– |
– |
306 |
| 1997/98 |
131 |
160 |
– |
– |
– |
– |
– |
– |
– |
– |
291 |
| 1998/99 |
128 |
151 |
– |
– |
– |
– |
– |
– |
– |
– |
279 |
| 1999/00 |
136 |
136 |
– |
– |
– |
– |
– |
– |
– |
– |
272 |
| 2000/01 |
135 |
126 |
– |
– |
– |
– |
– |
– |
– |
– |
261 |
| 2001/02 |
135 |
138 |
– |
– |
– |
– |
– |
– |
– |
– |
273 |
| 2002/03 |
127 |
145 |
– |
– |
– |
– |
– |
– |
– |
– |
272 |
| 2003/04 |
130 |
137 |
– |
– |
– |
– |
– |
– |
– |
– |
267 |
| 2004/05 |
126 |
151 |
– |
– |
– |
– |
– |
– |
– |
– |
277 |
| 2005/06 |
96 |
133 |
– |
– |
– |
– |
– |
– |
– |
– |
229 |
| 2006/07 |
112 |
136 |
– |
– |
– |
– |
– |
– |
– |
– |
248 |
| 2007/08 |
115 |
145 |
– |
– |
– |
– |
– |
– |
– |
– |
260 |
| 2008/09 |
129 |
158 |
– |
– |
– |
– |
– |
– |
– |
– |
287 |
| 2009/10 |
153 |
175 |
– |
– |
– |
– |
– |
– |
– |
– |
328 |
| 2010/11 |
159 |
194 |
– |
– |
– |
– |
– |
– |
– |
– |
353 |
| 2011/12 |
157 |
188 |
– |
– |
– |
– |
– |
– |
– |
– |
345 |
| 2012/13 |
155 |
184 |
– |
– |
– |
– |
– |
– |
– |
– |
339 |
| 2013/14 |
149 |
179 |
– |
– |
– |
– |
– |
– |
– |
– |
328 |
| 2014/15 |
161 |
169 |
– |
– |
– |
– |
– |
– |
– |
– |
330 |
| 2015/16 |
168 |
179 |
– |
– |
– |
– |
– |
– |
– |
– |
347 |
| 2016/17 |
165 |
189 |
– |
– |
– |
– |
– |
– |
– |
– |
354 |
| 2017/18 |
179 |
187 |
– |
– |
– |
– |
– |
– |
– |
– |
366 |
| 2018/19 |
168 |
188 |
– |
– |
– |
– |
– |
– |
– |
– |
356 |
| 2019/20 |
178 |
203 |
– |
– |
– |
– |
– |
– |
– |
– |
381 |
| 2020/21 |
195 |
199 |
– |
– |
– |
– |
103 |
106 |
85 |
88 |
394 |
| 2021/22 |
200 |
201 |
– |
– |
– |
– |
103 |
101 |
101 |
84 |
401 |
| 2022/23 |
203 |
205 |
– |
– |
– |
– |
92 |
102 |
100 |
102 |
408 |
| 2023/24 |
213 |
188 |
– |
– |
– |
– |
92 |
96 |
101 |
101 |
401 |
| 2024/25 |
202 |
199 |
– |
– |
– |
– |
95 |
95 |
98 |
103 |
401 |
| 2025/26 (preliminary) |
199 |
198 |
– |
– |
– |
– |
– |
– |
– |
– |
397 |