*160.041.  Minimum school day, school month, school year, defined — reduction of required number of hours and days, when. — 1.  The "minimum school day" consists of three hours for schools with a five-day school week or four hours for schools with a four-day school week in which the pupils are under the guidance and direction of teachers in the teaching process.  A "school month" consists of four weeks of five days each for schools with a five-day school week or four weeks of four days each for schools with a four-day school week.  In school year 2019-20 and subsequent years, no minimum number of school days shall be required, and "school day" shall mean any day in which, for any amount of time, pupils are under the guidance and direction of teachers in the teaching process.  The "school year" commences on the first day of July and ends on the thirtieth day of June following.

  2.  Notwithstanding the provisions of subsection 1 of this section, the commissioner of education is authorized to reduce the required number of hours or days in which the pupils are under the guidance and direction of teachers in the teaching process if:

  (1)  There is damage to or destruction of a public school facility which requires the dual utilization of another school facility; or

  (2)  Flooding or other inclement weather as defined in subsection 1 of section 171.033 prevents students from attending the public school facility.

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Such reduction shall not extend beyond two calendar years in duration.