P.R. Laws tit. 18, § 257
In each case of exchange under the provisions of §§ 255—259 of this title, in which the United States teacher receives, within the school system he hails from, a salary greater than that of the respective Puerto Rican teacher, the latter, in addition to his salary at the prevailing rate in Puerto Rico, shall be paid in accordance with the contracts executed a sum equal to the difference between the two (2) salaries. Such differential sum shall be fixed by the Secretary of Education on the basis of official information on the compensation schedules prevailing in the various school systems of the United States. The said Puerto Rican teachers and those of the United States shall also be paid their transportation expenses from Puerto Rico or from the United States, as the case may be, to the place in which they are to teach in the United States or in Puerto Rico, and the transportation expenses for their return to the Commonwealth or to the continent at the expiration of their contracts. Both payments, that for additional compensation and that for transportation, shall be made chargeable to the regular appropriations carried in the annual budget of the Department of Education for teachers’ salaries and travel expenses, or chargeable to any special appropriation that may be made with relation to the purposes of §§ 255—259 of this title.
History —May 16, 1955, No. 37, p. 126, § 3.