Missouri's Commissioner of Education notified Kansas City Schools Superintendent Steve Green Thursday that she would not recommend changing the district's accreditation. The schools were classified unaccredited in 2012.
Commissioner Chris NiCastro noted improved student performance, but she said one year of advances is not enough.
The accreditation is on the Missouri Sate Board of Education meeting agenda in October.
The district argued earlier this month that the system was worthy of provisional accreditation. District performance under the Missouri School Improvement Program showed progress in math and science. Fewer than 30 percent of students were proficient in those subjects.
In a letter to Green, NiCastro wrote, "We are pleased to see the progress students made in the Kansas City Schools, but we must do what we believe is in the best interests of the children."