N.J. Stat. Ann. § 18A:24-80

Any and all bonds issued pursuant to this act shall be conclusively deemed to be governmental obligations for governmental and public purposes, and the same, together with any interest thereon, shall be forever exempt from any and every tax and shall be excluded from the calculation of any and every tax, whenever enacted, of whatever nature and however levied, assessed or calculated, whether during the lifetime or at or after or by reason of the death of any holder.