La. Stat. tit. 17 § 125
The Orleans Parish School Board may maintain one or more normal schools for the professional training of teachers. The course of study pursued in such schools must be approved by the state board of education. All graduates of these normal schools shall be awarded diplomas. The normal schools in existence on July 29, 1942, under the authority of this Section, may award the degree of bachelor of arts and bachelor of science to graduates who complete four-year courses approved by the state board of education. Wherever the Orleans Parish School Board fixes salary schedules to distinguish between teachers employed on July 29, 1942, who have certificates based on degrees from recognized colleges or universities and certificates issued by the state board on the basis of a two years normal course, or on other qualifications accepted by the state board of education, and in which cases the teachers are on the same level of experience, the Orleans Parish School Board shall in no instance pay to the teacher holding the certificate based on the two years normal course, or on other qualifications accepted by the state board of education, a salary which shall be less than that paid to the holder of the certificate based on a college degree by an amount exceeding Fifteen Dollars per month, or One Hundred Fifty Dollars per annum.
La. R.S. § 17:125