Approval of bond issue by attorney general.

No issue of bonds shall be valid or binding on any school district unless prior to the issuance of the bonds the attorney general approves the bond issue as to form and legality. The written approval of the attorney general shall be made a part of the transcript of the proceedings in connection with each bond issue. The local school board of each school district proposing to issue bonds shall provide the attorney general with all information necessary for this consideration of the form and legality of the bond issue.