A pupil who contacts an illness of a prolonged nature or who has been a victim of an accident which will prevent attendance for a prolonged period shall be counted as absent due to illness only until such time as he is able and starts to receive instruction in home, hospital, or sanitorium, or is given instruction by other means. No absence due to illness shall be credited as attendance beyond the current school year.
Cal. Code Regs. Tit. 5, § 423