63 STAT.] 81ST CONG. , IST SESS.-CH. 618 -OCT. 6 , 1949 of teachers, school officers, and other employees of the Board of Edu- cation of the District of Columbia, and for other purposes", approved July 7, 1947, be and the same hereby is amended by striking out the following words and figures. "CLASS 13-PRINCIPALS IN ELEMENTARY SCHOOLS WITH SIXTEEN OR MOBR ROOMS, AND PRINCIPALS IN AMERICANIZATION SCHOOLS "A basic salary of $4,300 per year, with an annual increase in salary of $100 for ten years, or until a maximum salary of $5,300 per year is reached." and inserting in lieu thereof the following: " CLASS 13-PRINCIPALS IN ELEMENTARY SCHOOLS AND PRINCIPALS IN AMERICANIZATION SCHOOLS "A basic salary of $4,300 per year, with an annual increase in salary of $100 for ten years, or until a maximum salary of $5,300 per year is reached." SEC. 2. Paragraph (ap) of section 6 of title III of said Act is hereby amended by inserting the following at the end of said paragraph: "No longevity increases for placement as provided in this paragraph shall be granted to any probationary or temporary teacher, librarian s research assistant, counselor, or instructor in the teachers colleges appointed after June 30, 1949, to group C in salary classes 1 to 8, inclusive, in article I of title I, unless credit for such increases is based upon approved teaching or other service rendered after the master's degree had been conferred upon the appointee: Provided,That this limitation on placement credit shall not apply to appointments made from current eligible lists effective on July 1, 1949." SEC. 3 . Section 6 of title III of said Act is further amended by inserting at the end thereof a new paragraph to be lettered "(ar)" and to read as follows: "Every permanent and probationary teacher, librarian, research assistant, counselor, and instructor in the teachers colleges in the employ of the Board of Education on June 30, 1947, who either possessed a master's degree on June 30, 1947, or shall have received a master's degree during the fiscal year ending June 30, 1948, and whose salary during the fiscal year ending June 30, 1948, was less than $3,500, shall be entitled to receive in lieu thereof a salary of $3,000 per annum plus longevity increases for placement in group C in salary classes 1 to 8, inclusive, in article I of title I, of $100 for each year of like service in the public schools of the District of Colum- bia acceptable to and approved by the Board of Education, including military leave and educational leave with part pay, subsequent to probationary appointment and prior to July 1, 1947, but for not more than the fifth year of such service, to be effective as of July 1, 1947, or on the first of the month immediately following the date on which the master's degree was conferred, whichever islater, and shall be entitled to receive annual increases thereafter in accordance with the provisions of sections 5 and 7 of this Act. The provisions of this paragraph shall not operate to reduce the amount of annual compen- sation of any teacher, librarian, research assistant, counselor, or in- structor in the teachers colleges, below the amount of annual com- pensation received by him during the fiscal year ending June 30, 1948." SEC. 4. (a) Paragraph (b) of section 21 of title V of said Act is hereby amended to read as follows: "After the effective date of this Act, the Act entitled 'An Act for the retirement of the public-school teachers in the District of Columbia', approved August 7, 1946, shall apply to permanent employees of the Board of Education whose salaries are fixed by this Act, and all references in said Act to the 61 Stat. 257. 61 Stat. 249. 61 Stat. 254. Teachers, etc., with masters' degrees. 61 Stat. 249. Annual increases. 61 Stat. 253, 267. 61 Stat. 260 60 Stat. 875. D. C. Code, Snpp. VII, i§ 31-721 to 31- 739. 707 61 Stat. 250.