Russell Hobby, general secretary of the National Association of Head Teachers (NAHT), said the results were "excellent news".
"It shows the hard work that's going on in the system and has been going on for some years."
He said the majority of primaries will not be academies, which shows that schools can improve "no matter what their status".
More top news
Scientists have discovered the world's deepest fish with wing-like fins and an eel-like tail during research in the depths of the Pacific.
The tranquil district of Hart has been crowned as the place with the best quality of life in the UK for the fourth year in a row.
Britain's immigration system is in 'critical condition' according to the chair of the Home Affairs Select Committee.