California Code, Education Code - EDC § 37680

(1) An increase in pupil population beyond the demographic projections set forth in the district's comprehensive action plan, or an amendment thereto, if the increase was not reasonably foreseeable through the use of annual, informed reestimates of demographic projections.

(2) A cost escalation, shortage in construction material or capacity, delay in completion of an environmental review, or natural or human-made disaster materially affecting the district's facilities program, if the circumstance was not reasonably foreseeable and the district exercised due diligence in planning for that circumstance.

(3) A lack of sufficient state or local funds to complete necessary school construction. “Lack of sufficient state or local funds” may not be substantiated if a district expends state or local funds designated for new construction for any purpose other than the construction of additional school facilities to reduce reliance on the Concept 6 program, except for funds for projects eligible to receive facility hardship funds pursuant to Article 8 (commencing with Section 17075.10) of Chapter 12.5 of Part 10.

(1) The district has identified preferred sites and has approved projects, as required under the California Environmental Quality Act (Division 13 (commencing with Section 21000) of the Public Resources Code), needed to satisfy the pupil capacity projected in the district's comprehensive action plan.

(2) The district has identified and obtained the funding necessary to complete the particular projects identified. If state funding is part of the funding identified, a district is deemed to have obtained state funding if it has received either of the following: