The latest Ofsted school performance stats show that 90.3% of Lincolnshire schools are now rated good or outstanding.
This puts the county 52nd out of 152 English authorities, and fourth from the top compared to similar local authorities around the country.
Lincolnshire is well ahead of neighbouring local authorities in the East Midlands, the next best of which is Leicestershire with 88% of good or outstanding schools.
The average performance for England as a whole is below Lincolnshire at only 87.4%, while the county also comfortably beats the East Midlands average of 84.5%.
Patricia Bradwell, Executive County Councillor for Children’s Services, said: “This vindicates all the good work we have put into this area over recent years.
“Together with our partner, CfBT Education Trust, school improvement has continued to be a priority to ensure schools provide the best start in life for children and young people.
“We have an excellent range of maintained, foundation, faith and grammar schools across the county, plus a large number of academies particularly in the secondary sector.
“This gives parents a wide choice of quality education which caters for all of our children and young people.
“Schools have embraced the challenge to be the best they can and we will continue to strive to improve Lincolnshire’s standing still further.”