| Ysgol Bro Dinefwr | |
| Motto: | Welsh: Esgyn ar Adain Dysg |
| Type: | State school |
| Head Label: | Head Teacher |
| Head: | Eirian Davies |
| Address: | Heol Myrddin |
| City: | Llandeilo |
| County: | Carmarthenshire |
| Country: | Wales |
| Postcode: | SA19 6PE |
| Urn: | 402328 |
| Enrolment: | 1182 (in 2016) |
| Gender: | All |
| Lower Age: | 11 |
| Upper Age: | 19 |
Ysgol Bro Dinefwr is a bilingual secondary school for pupils aged 11–19 in Ffairfach, Carmarthenshire. As of 2023, the school had 1,175 pupils on roll, with 177 of those pupils in the sixth form.[1]
The school was established in 2013 following the amalgamation of Ysgol Gyfun Tre-Gib and Ysgol Gyfun Pantycelyn in 2013.[2] These schools were located in Ffairfach and Llandovery, before closure, now occupying a new £30 million school building in September 2016.[3]
The school is categorized linguistically by Welsh Government as a Category 2B school, meaning that at least 80% of subjects, excluding English and Welsh, are taught through the medium of Welsh but are also taught through the medium of English.[4] [5] Science is taught through the medium of English to all classes.[6] In 2017, 55% of pupils enrolled could speak Welsh fluently. 30% of pupils came from Welsh-speaking homes.[7]