‘1. Number. A school administrative unit shall make provision for the maintenance of all of its schools for at least 180 days a year. At least 175 days shall must be used for instruction. Except for schools in Aroostook County, instructional days may not begin before the official Labor Day holiday of each year. In meeting the requirement of a 180-day school year, no more than 5 days may be used for in-service education of teachers, administrative meetings, parent-teacher conferences, records' days and similar activities.
A. The commissioner may reduce or waive the minimum number of days required on application from a school board. The application must be supported in writing with a statement of the reasons for the request.
B. Notwithstanding any other section of the statutes, school committees, with the approval of the commissioner, may adopt or amend rules necessary to implement an extended school year at the local level. The commissioner may make appropriate adjustments, not to exceed the allowable subsidy, to insure ensure fair and equitable treatment in the distribution of state aid.
C. Notwithstanding this subsection, the commissioner shall promulgate adopt a rule to provide that local school units may allow secondary school students to graduate up to 5 school days prior to the regular end of the school year.
D. A school administrative unit, operating under a plan approved by the commissioner, may provide for the use of up to 5 of the 175 instructional days required by this section to be used for screening incoming first year students for the purpose of identifying children with disabilities and students at risk of school failure as required by state or federal law.
E. Notwithstanding this subsection and any other provision of law, for school years 1991-92 and 1992-93, a school administrative unit may reduce the number of days for the maintenance of all its schools by 5 days a year. A school administrative unit that decides to reduce the number of school days for school year 1991-92 or 1992-93, or both, shall notify the commissioner in writing of its plan.’