Jambi Education Office, is a government institution located in the city of Jambi which is one of the government institutions engaged in education. It serves all existing schools in Jambi. In the process of selecting the best schools, there are many obstacles facing the educators; the condition of the building and the facilities at the school. This happens because of the number of schools located in Jambi. Therefore, not all schools will be the best schools; only those which meet the criteria will be the best school. It can be done by through the processing of decision support system using a method called Simple Additive Weighting. This system can be used to determine which schools are eligible to be the best schools in Jambi. The utilization of decision support system with Simple Additive Weighting method can determine the weight value for each attribute, then proceed with a ranking process that will select the best alternative from a number of alternatives. In this case, the intended alternative is the right ones to become the best schools based on the specified criteria.