2Sections 29 and 30 of this Act shall apply in respect of a person who, at the time when he ceased to be of school age (as defined in section 31 of the [1980 c. 44.] Education (Scotland) Act 1980) or at any subsequent time, was—
(a)in the care of a local authority by virtue of the said section 15 or of section 16 of the 1968 Act (assumption of parental rights and powers); or
(b)subject to a supervision requirement (within the meaning of section 44(1) of the 1968 Act),
as they apply in respect of a person who at such time was looked after (within the meaning of Part II of this Act) by a local authority.