(a) A school district shall pay each full-time district employee, other than an administrator or an employee subject to the minimum salary schedule under Section 21.402, an amount at least equal to $500.
(b) A school district shall pay each part-time district employee, other than an administrator, an amount at least equal to $250.
(c) A school district employee entitled to a wage increase under this section may elect to receive a portion of the person's annual wages as health care supplementation as provided by this subchapter.
(d) A payment under this section is in addition to wages the district would otherwise pay the employee during the school year.