Cal. Educ. Code § 35572

No territory shall be taken from any school district having any outstanding bonded indebtedness and made a part of another school district where the action, if taken, would so reduce the last equalized assessed valuation of the divided district so that the outstanding bonded indebtedness of the divided district would exceed 5 percent of the assessed valuation in the remaining territory of the divided district for each level maintained, on the date the reorganization is effective pursuant to Section 35766.