SED has posted the May 2018 percentage change in the CPI (2.2%) that is to be used for the extension of student transportation contracts for the 2018-19 school year (http://www.p12.nysed.gov/schoolbus/contracts/html/consumer_price_index.html).
Information from SED about pupil transportation contracts and contract extensions can be found at: http://www.p12.nysed.gov/schoolbus/contracts.html.