Ysgol Gymraeg Dewi Sant is a successful learning community that celebrates Welshness, courtesy and respect well and provides valuable experiences for pupils. The headteacher, with the effective support of the deputy headteacher, provides clear leadership that contributes to a well-rounded education for pupils. Staff are committed to providing a high quality of care and well-being for pupils across the school in a homely and supportive learning environment. This has a strong influence on pupils’ attitudes towards each other and adults. Pupils’ pride in their local area and Wales is an obvious strength. Most pupils develop knowledge, understanding and skills that are appropriate for their age and stage of development successfully. They make sound progress in their communication skills and, by the end of their time at the school, they speak both Welsh and English confidently. Most of the oldest pupils read books intelligently in both languages and with increasing fluency. Provision to support the learning skills of pupils with additional learning needs (ALN) is good. As a result, most make consistent progress over time against their targets and previous achievements. Where teaching is most effective, pupils make strong progress. In these examples, they apply their skills in activities that provide a challenge to support them to make sound progress in independent learning activities. Where teaching is not as good, there are very few purposeful opportunities for pupils to undertake their learning independently which, in turn, slows their progress. Self-evaluation arrangements and planning for improvement are thorough. Members of the governing body support the headteacher and staff effectively. They have a sound awareness of the school’s strengths and priorities for improvement and provide an appropriate balance of support and challenge. Maintaining a proactive relationship with all families is a priority for the headteacher and staff. As a result, the lively and effective culture of co-operation contributes significantly to the school’s welcoming and inclusive ethos.