In any school district within this State, including the City of Wilmington, where there are 10 or more persons over 16 years of age who do not speak the English language and who desire to attend a class or classes in which they may receive instruction in speaking English, the body having control of the public schools of such district or of such City may establish a class or classes, to be held in the evening or at such other time as may be convenient for such persons, for the instruction of such persons in the English language and in the institutions and forms of government of the United States and this State. The teachers for such classes shall be employed by the body having control of the public schools and need not be holders of certificates under this title.