Mass. Gen. Laws ch. 22C § 25
The colonel shall prepare a notice for all promotional examinations and shall cause notice thereof to be published in the orders of the department no later than thirty days prior to the final date for filing of applications therefor. No such promotional examination shall be held less than thirty days after the final date for filing of applications for such examination.
The colonel shall make rules and regulations relative to the right of any uniformed member of the state police to appeal (i) a marking of a member's answers to the questions on such promotional examination; (ii) a finding by the colonel that a member does not meet the entrance requirements for such examination; and (iii) the suitability of a question or assessment to test the fitness of such member to perform the primary and dominant duties of the rank for which the examination was held. The colonel shall promulgate regulations specifying the time within which any promotional vacancy in the department shall be filled.
Mass. Gen. Laws ch. 22C, § 22C:25