As D21 contemplates another run at a school bond, it asked bond underwriters to come up with a new set of figures: a new high school would cost $100 million and cost taxpayers $3 per $1,000 of assessed property valuation over 25 years.

Alternatively, if the board asked voters only to continue paying the same amount that is being levied now for the middle school bond, which is paid off in 2020, that would yield about $1.64 per $1,000. That would give the district $54 million in a 25-year bond, enough to build a single elementary school and do a few other things, Superintendent Candy Armstrong said.