SCHOOLS ‑- TEACHERS' SALARIES ‑- BASIS FOR DISTRIBUTION OF INCREASE A board of directors need not give an increase of $505.50 to each certificated employee of the district under the provisions of Sec. 2, Ch. 301, Laws of 1957.  The board may adopt a graduated schedule or other basis so long as all of the funds apportioned to it for salary increases are used for that purpose.