Ysgol Gyfun Gymraeg Glantaf

Secondary · ages 11-19Council1,498 pupilsSixth formCardiff

School Chooser Score

Well above
similar schools

Likely range 89 to 95

Out of 100. Better than 80% of the 50 schools most like it. Much the same over the last five years.

Best nine GCSE grades score413Wales 366

Attendance92.2%Wales 89.6%

Pupils from low-income families7%Wales 20%

Pupils with additional learning needs5%Wales 11%

Pupils on roll1,498

NeighbourhoodAbove-average income areaWelsh Index of Multiple Deprivation 2025

Ysgol Gyfun Gymraeg Glantaf is a council school in Cardiff for pupils aged 11 to 19. It has 1,498 pupils. We give it 93 out of 100. That puts it well above schools like it, ahead of 80% of the 50 schools most like it. Teaching is mainly in Welsh.

Bridge Road, Llandaff North, Cardiff, CF14 2JL029 2083 8803All details

Inspection

Schools in Wales are inspected by Estyn, not Ofsted. Since September 2022 Estyn's reports describe what a school does well and what it needs to work on, without giving a grade.

Estyn's latest report, and any follow-up visits, are on Estyn's website. The only schools given a formal label are those in special measures or needing significant improvement.

Find this school's Estyn reports My Local School (Welsh Government)

Results

GCSE results, summer 2025

Wales scores GCSEs in points rather than counting passes. Here is how the school compares with all secondaries in Wales.

Best nine GCSE grades score413

Wales 366

Official name: Capped 9 points score (interim)

English or Welsh score46.8

Wales 39.9

Official name: Literacy points score

Maths score43.7

Wales 36.9

Official name: Numeracy points score

Science score43.5

Wales 37.0

Official name: Science points score

Trend

Best nine GCSE grades score

2023 to 2025

Since 2023: +7Steady overall

All GCSE measures, year by year

Measure	2025	2024	2023	Cardiff	Wales
Best nine GCSE grades scoreCapped 9 points score (interim)	413	411	406	380	366
English or Welsh scoreLiteracy points score	46.8	46.5	47.2	41.4	39.9
Maths scoreNumeracy points score	43.7	43.5	43.4	39.2	36.9
Science scoreScience points score	43.5	45.1	43.3	38.3	37.0
Welsh Baccalaureate scoreSkills Challenge Certificate points score	44.6	46.8	42.5	21.6	31.6
Best nine GCSE score: low-income pupilsCapped 9, eligible for free school meals	336	257	354	336	308

Interim measures published by the Welsh Government; no measures were published for 2020 to 2022.

Does every child do well here?

A good school does well by every child, not just on average. Each row compares two groups of pupils here. The grey marks show the same two groups across England. None of the gaps is smaller than the gap across England. When a group has fewer than about ten pupils, its figures jump around a lot from year to year.

At GCSE, 2025

Best nine GCSE grades scoreLow-income pupils vs all pupils

336.2413.1

Gap 76.9England 57.9

Literacy pointsLow-income pupils vs all pupils

39.746.8

Gap 7.1

Numeracy pointsLow-income pupils vs all pupils

32.743.7

Gap 11.0

Science pointsLow-income pupils vs all pupils

29.243.5

Gap 14.3

First groupSecond groupEngland, each group

Low-income means the child gets free school meals. The Welsh figures are averaged over three years, and the grey marks show Wales rather than England.

Getting a place

There is no entrance test. The council hands out the places. Brothers and sisters of current pupils and other priority groups go first; after that, the closer you live, the better your chances.

Teaching is mainly in Welsh.

You apply through Cardiff council, not the school.

Who goes here

Who a school teaches matters. That is why our score compares it with schools that take in a similar mix of children, not with every school in the country.

Pupils on roll1,498

Pupils from low-income families7%Three-year average; Wales 20%

Pupils getting extra support5%Additional learning needs; Wales 11%

Black, Asian and minority ethnic pupils13%

LanguageWelsh mediumWelsh medium school / provision (including transitional)

NeighbourhoodAbove-average income areaIf Wales's neighbourhoods were split into ten groups from poorest to wealthiest, this one is in group 7 (Welsh Index of Multiple Deprivation 2025)

How the mix of pupils has changed

Year	2025	2024	2023	2022	2021	2020
Pupils from low-income familiesFree school meals	7.2%	8.2%	8.7%	8.8%	8.7%	8.4%
Pupils getting extra supportAdditional learning needs (ALN)	4.6%	5.8%	8.7%	11.6%	17.8%	18.5%
Black, Asian and minority ethnic pupilsBAME pupils	13.2%	11.7%	11.9%	11.6%	11.1%	10.0%

Attendance

In 2024/25 pupils were in school 92.2% of the time. Across secondary schools in Wales it was 89.6%. Wales doesn't publish figures on pupils who miss a lot of school, or on exclusions, for individual schools.

Attendance92.2%

Wales 89.6%

Official name: 100 minus overall absence

Trend

Attendance

2019 to 2025

Since 2019: -1.7%Steady overall

Staff and budget

From the Welsh Government's My Local School, 2025/26.

Budget per pupil£5,8982025/26, Wales £5,956

Trend

Budget per pupil (£)

2020 to 2026

Since 2020: +521Steady overall

The budget is the money the council gave the school to spend per pupil in 2025/26, £58 less than the Welsh average for secondary schools. Small and rural schools tend to get more per pupil.

The area around the school

Crimes within 500 m19512 months to June 2026, mostly violence and sexual offences

Local crime rate95 per 1,000 peopleabout the England average

Typical house price£269,475Cardiff

Nearest bus stop80 mYsgol Glantaf, 20 stops within 500 m

Crime figures come from police.uk. The police record each crime at the nearest of a fixed set of map points rather than the exact spot, so “within 500 m” is only rough. House prices are from HM Land Registry sales nearby over the last two years.

Nearby schools

The closest secondary schools, nearest first. Hover over a row to see it on the map.

Well aboveAboveIn lineBelowWell belowNot scored

School	Type	Distance	Pupils	Ofsted	Score
The Bishop Of Llandaff C.I.W. High School	Church in Wales	640 m	1,263	Estyn, no grade	100	Compare
Cantonian High School	Council	0.7 miles	947	Estyn, no grade	56	Compare
Whitchurch High School	Foundation	0.9 miles	2,459	Estyn, no grade	66	Compare
Ysgol Gyfun Gymraeg Plasmawr	Council	0.9 miles	1,181	Estyn, no grade	58	Compare
Radyr Comprehensive School	Council	1.1 miles	1,426	Estyn, no grade	92	Compare
Cathays High School	Council	1.5 miles	1,247	Estyn, no grade	88	Compare
Cardiff West Community High School	Council	1.8 miles	1,061	Estyn, no grade	3	Compare
Fitzalan High School	Council	2.0 miles	1,833	Estyn, no grade	70	Compare

Secondary schools in Cardiff Best secondary schools in Wales

Compared with schools like it

Our score compares Ysgol Gyfun Gymraeg Glantaf with the 50 schools in Wales whose pupils are most like its own. We match on family income, how many children are learning English, special needs, the neighbourhood, the size of the school and how it admits pupils. Those 50 schools are dotted all over the country, so we don't list them. What matters is where this school sits among them.

Beats80%of schools with a similar mix of pupils

In the top quarter of its group. Its score of 93 is 24 points above the typical school in the group.

0Lowest of the group 7 · middle 69 · highest 100100

Nearby schools with a similar mix of pupils that score higher

Of those 50 schools, these are within 25 km and score at least five points more than Ysgol Gyfun Gymraeg Glantaf, nearest first. A school with the same kind of pupils and a higher score is the fairest sign that it gets more out of them.

School	Type	Distance	Pupils	Ofsted	Score
The Bishop Of Llandaff C.I.W. High School	Church in Wales	640 m	1,263	Estyn, no grade	100	Compare
Cardiff High School	Council	2.5 miles	1,794	Estyn, no grade	99	Compare
Cowbridge Comprehensive School	Council	9.5 miles	1,559	Estyn, no grade	99	Compare

How the score was worked out

The score is out of 100. A 93 means that once everything below is added up, this school comes out ahead of 93% of secondary schools in Wales. Results bounce around from year to year, especially in small schools, so we also show a likely range: 89 to 95. Every part is judged against schools with a similar mix of pupils. For small schools we pull each part towards the group average, so one unusual year can't swing the score too far.

What we looked at	How much it counts	Against schools like it	Effect on the score	Based on
Results over three years	40%	well above	+0.56	2025, 2024 and 2023 results; 299 pupils
Results, allowing for the mix of pupils	25%	above	+0.15	Attainment relative to schools with a similar intake; 299 pupils
Attendance and behaviour	20%	above	+0.19	2024/25; 1,498 pupils
Direction of travel over five years	15%	in line	+0.01	results and attendance rising year on year

Worked out on 13 September 2026 (method v1). Read how the score works, including every weight and the checks we run. Think a number is wrong? Tell us.

Questions parents ask

Is Ysgol Gyfun Gymraeg Glantaf a good school?

Yes, going by the figures. Ysgol Gyfun Gymraeg Glantaf scores 93 out of 100. That is well above schools that take in a similar mix of pupils, and ahead of 80% of the 50 schools most like it in Wales. The score could fairly be anywhere from 89 to 95, so a few points either way between schools doesn't mean much.

How many pupils does Ysgol Gyfun Gymraeg Glantaf have?

1,498 pupils aged 11 to 19.

Does Ysgol Gyfun Gymraeg Glantaf have a sixth form?

Yes.

These answers come straight from the figures on this page and update when new data comes out.

Contact and details

Address: Bridge Road, Llandaff North, Cardiff, CF14 2JL
Telephone: 029 2083 8803
Type of school: Council school (Community school, local authority maintained schools)
Phase: Secondary school, ages 11-19, with sixth form
Religious character: None
Local authority: Cardiff
Ward: Llandaff North
Constituency: Cardiff North
Setting: Urban: Nearer to a major town or city
URN: 401885 · School number 6814071 · UKPRN 10008866
Language: Welsh medium school / provision (including transitional)

Official record My Local School Download this school's data (CSV)

Recent changes

13 September 2026PhaseCode changed from “Secondary” to “Other”
13 September 2026TypeCode changed from “Community school” to “Welsh establishment”
13 September 2026Pupil numbers changed from “1498” to “–”
13 September 2026Free school meals % changed from “7.2” to “–”
13 September 2026ReligiousCharacter changed from “None” to “–”

Where these figures come from

School details: Department for Education Get Information About Schools and the Welsh Government address list of schools (this page rebuilt 13 September 2026).
Results, attendance, pupils, staff and budget: Welsh Government, My Local School, latest data to 2026.
Neighbourhood deprivation: Welsh Index of Multiple Deprivation 2025 postcode lookup.
All under the Open Government Licence v3.0. Full list and update calendar.