Seven out of 10 schools across Surrey have been rated as good or outstanding by Ofsted, the county council has said.
Statistics showed 74% of the county's state primary schools were outstanding or good, and 70% of secondary schools reached the same level.
Nationally, 51% of primary schools and 45% of secondary schools were rated as good or outstanding.
Councillor Peter Martin said Surrey was outperforming schools nationally but "would not rest on its laurels".
School academy plan
The figures also showed that 87% of Surrey's special schools received outstanding or good grades, compared with 75% nationally.
Mr Martin, cabinet member for children and learning, said: "These figures reinforce the fact that Surrey has some of the best state schools in the country and demonstrate we are continuing to outperform schools nationally."
But he added: "We know there are schools in Surrey that can perform better and we are doing everything possible to make sure they match up to the 70% or more that are already outstanding or good."
Last month, it emerged that Surrey was in the early stages of exploring whether all its secondary schools could become academies.
The county council wrote to the Department for Education, which requested more details on the plans.