Except for the apportionment and election of the members of boards of education of regional districts pursuant to P.L. 1970, c. 305 (C. 18A:13-9.1 et seq.), the Federal census of 1970 shall become effective May 1, 1971, or on the date of the filing of the bulletin provided for in R.S. 52:4-1, whichever date is later.
N.J.S. § 52:4-3