(a) The funds appropriated to each school district for salaries included in Division I shall be determined in accordance with all applicable state-supported salary schedules. No state funds from Division I shall be appropriated to any school district to provide salaries for more teachers than shall actually be employed in such school district.
(b) Any school district may employ additional teachers out of state funds appropriated in Division II or Division III as provided in § 1304 of this title.