Completing your teacher training course through a teacher training provider is the most popular route to achieving qualified teacher status.  Initial teacher training (ITT)  combines university based theoretical learning with up to 24 weeks practical teaching experience.  ITT helps you develop the skills and knowledge you need to become an effective teacher.  

Those entering at PGCE will be expected to have good subject knowledge normally relevant to their degree.  Undergraduates who are combining their degree with teacher training will  have their subject knowledge developed as part of their teacher training.
Some university providers may expect you to undertake a 10 days directed pre-course school placement as a condition of your offer .  This is normally a week in a primary school and a week in a secondary school.  The 10 days (two weeks) contributes to the required 24 weeks of teaching experience.  This will be discussed with you at interview. 

Those who are fluent in Welsh may opt to take their teacher training through the medium of Welsh and take their practical teaching experience in a Welsh-medium school.   A Welsh-medium Incentive Scheme  provides financial and linguistic support to students who need additional confidence and competence training to help them teach their secondary subject through the medium of Welsh.

In Wales, you do not have to take the National Skills tests to be recomended for the award of Qualified Teacher Status.
 
Initial Teacher Training Provision in Wales
 
Initial Teacher Training (ITT)in Wales is provided for by three collaborative ITT centres of teacher education and the Open University.  Each centre will comprises of two ITT providers.  The structure, organisation and course portfolios of the centres will vary and will reflect the individual institutions involved.  The centres are:  

• North and Mid Wales Centre for Teacher Education, provided by Bangor University and Aberystwyth University
• South West Wales Centre for Teacher Education (SWWCTE) provided by Swansea Metropolitan University and University of Wales, Trinity St David, Carmarthen
• South East Wales Centre for Teacher Education and Training (SEWCTET)  provided by the University of Wales, Newport and the University of Wales Institute, Cardiff 

The Open University in Wales operates independently providing flexible ITT provision.

A full course list offered by these three centres and the Open University in Wales my be found under 'Where Can I Train > Providers'