(a) A school district may operate its schools year-round on either a single-track or a multitrack calendar. If a school district adopts a year-round system, the district may modify:
(1) the number of contract days of employees and the number of days of operation, including any time required for staff development, planning and preparation, and continuing education, otherwise required by law;
(2) testing dates, data reporting, and related matters;
(3) the date of the first day of instruction of the school year under § 25.0811 for a school that was operating year-round for the 2000-2001 school year; and
(4) a student’s eligibility to participate in extracurricular activities when the student’s calendar track is not in session.
(b) Except as provided by Subsection (c), the operation of schools year-round by a district does not affect the amount of state funds to which the district is entitled under Chapter 48.

(c) A district that adopts a year-round system under this section may receive the incentive aid under § 48.0051 if the district meets the criteria for receiving the incentive under that section.