Whenever any school board deems it inexpedient to organize part-time schools or classes for employed minors, it shall state the reasons for such inexpediency in a petition to the State Director for Vocational Education, and when the Secretary or Deputy Secretary of Education, upon the recommendation of the State Director, judges such reasons to be valid, the school board shall be excused from the establishment of such part-time schools or classes.

32 Del. Laws, c. 162, § 12; Code 1935, § 2701; 14 Del. C. 1953, § 3503; 71 Del. Laws, c. 180, § 164