Problem solving is important for mathematechal learning because it enables student to enhance high thinking skills and positive attitudes.This research aimed at describing and comparing the abilities of junior high school student in grade VIII from one of the regencies/cities in Central Kalimantan(indonesia) in solving mathematical problems based on schools'accreditations(A,B,C,and unaccredited),and schools status (public and private). the rsesarcher gave three mathematical problems to the student from 20 sampels of schoolsh.the schools were randolmy selected from the population consisting of 62 junior high schools.Each stuident's solution was scored using a holistic rubic.the scores were summarized using some statistics represented in tables and graphics and were analyzed using a kruskal-wallis nonparametric test because the data were not normally distributed.The finding indicated that the average scores of the public and private schools'student were 4.71 and 3.49 (scale 0-12),respectively.Based on the percentages,namely 1.91% and 39.66%,the students were classified as good and naive problem solvers,respectively.Further test revealed that the stuidents from the A-accredited public schools significantly achieved the highest score for problem solving skllis.Merawhile,the students in the A-accredited and the unaccredited private schools did not show a significant difference in the skills.Similar result was also found in the public schools which were accredited B and C,and unaccredited.