In September 2011, Washington state adopted a new student transportation evaluation system. The goal of the system, being part of the transportation funding system, is to encourage school districts to operate as efficiently as possible. The Office of Superintendent of Public Instruction (OSPI) uses a statistical process to determine relative efficiency ratings. The process sets a target for transportation expenditures and the number of buses operated. The results show a majority of school districts are operating above 90 percent efficiency. Regional Transportation Coordinators (RTCs) conduct efficiency reviews of districts whose efficiency ratings are less than 90 percent. This is the sixth year of the RTC efficiency review process. The RTCs conducted reviews on 61 school districts in 2017-18. Sixty-one districts rated less than 90 percent, which is 13 fewer than last year. Of these 61 districts, 15 districts were not reviewed in 2016-17. Of the 74 districts rated less than 90 percent last year, 28 increased their efficiency rating to above 90 percent. Seventeen districts below 90 percent in 2016-17 increased their efficiency rating to 100 percent. In addition to the efficiency reviews, OSPI analyzes districts using three Key Performance Indicators (KPIs): (1) The number of basic program students per basic program bus; (2) The number of special education students per special education bus; and (3) The cost per student transported.