The overall GCSE pass rate for Caerphilly County Borough students was 98.6%, compared with 98.1% last year.
The slight increase means the county borough pass rate is only just behind the Welsh national average of 98.7%.
The provisional results show that the percentage of learners achieving five GCSE passes at A* to C grade (or vocational equivalent) has increased to 68.05%, up from 64.0% in 2012.
The percentage of students gaining five GCSEs at grades A* to G has remained constant compared to last year with 92%.
The percentage of learners achieving five GCSEs at A* to C grade including either Welsh or English and Mathematics has increased to 45.21%, from 43.7% in 2012.
Cllr Rhianon Passmore, Cabinet Member for Education, said: “Huge congratulations must go to our students and teachers on their excellent performance. These commendable results are testimony to their hard work, dedication and ability. Well done to you all.”
Since September 2012, Caerphilly County Borough Council has worked closely with the Education Achievement Service (EAS) for South East Wales, which was formed by Blaenau Gwent, Caerphilly, Newport, Monmouthshire and Torfaen local authorities to provide increased levels of challenge and support to schools.
The EAS works with governors, school leaders and staff to improve the learning experiences of children and young people, and through this, work to enhance their success in national examinations and opportunities for employment.
The percentage of learners achieving five GCSEs at A* to C grade including either Welsh or English and Mathematics has increased to 45.21%, from 43.7% in 2012.
And this is regarded to quote R. Passmore an'excellent performance'. I think Labour need to appoint a new Cabinet Minister for Education.
As an employer, I take no confidence from these results. Do we honestly agree and accept that lower than a grade C is considered a pass? If we do, then the future is in the hands of under achievers.
I tend to agree, less than half passing the 'essentials', which are maths and a language, is hardly cause for celebration. I would go further and say that an A to C grade in at least one science or engineering discipline is desirable.