A Denbighshire school has been taken out of special measures 18 months after problems were identified with education standards.
Last January schools inspectorate Estyn said that Rhyl High School had "important shortcomings".
The school then introduced an action plan to improve standards and teaching.
"I am confident that the school has the drive and capacity to continue on this positive improvement journey," said Denbighshire councillor Eryl Williams.
Mr Williams, the council's cabinet lead member for educational standards and attainment, said: "Rhyl High School has made excellent progress over the last 12 months and it is fitting that Estyn has recognised this during the recent inspection."
Councillor Ian Gunning, a governor at the school, said: "I am delighted that the school is now going from strength to strength and that our children and young people can look forward to an excellent education assisted and supported by some truly remarkable teaching staff.
"Now all we need is a new school building to give our staff and pupils the facilities they so richly deserve."
Last year Estyn found that GSCE and A-Level results were below national average and attendance rates fell "well below".
The inspectorate said the quality of teaching at the school was significantly below average for Wales.
A school is placed into special measures when "a school is failing to provide an acceptable standard of education and the persons responsible for leading, managing or governing the school are not demonstrating the capacity to secure the necessary improvement in the school".