24 Pa. Stat. § 13-1313
Where any pupil in any school district resides one and one-half miles, or more, by the public road, from the nearest public elementary school in the district, such pupil, unless proper free transportation is furnished to a suitable school in the district, may attend any public elementary school in another school district more convenient of access, on obtaining the consent of the board of school directors of such other school district, and without the consent of the board of school directors of the district where such pupil resides. The district where such pupil resides shall promptly pay, to the district where such pupil attends, the tuition charge provided for by this act. The board of school directors of any district may, on account of convenience of access, or other reasons, permit any pupils to attend the schools of another district.
24 P.S. § 13-1313