California Code, Education Code - EDC § 89908

(a) The contract or transaction is between an auxiliary organization and a member of the governing board of that auxiliary organization.

(b) The contract or transaction is between an auxiliary organization and a partnership or unincorporated association of which any member of the governing board of that auxiliary organization is a partner or in which he is the owner or holder, directly or indirectly, of a proprietorship interest.

(c) The contract or transaction is between an auxiliary organization and a corporation in which any member of the governing board of that auxiliary organization is the owner or holder, directly or indirectly, of 5 percent or more of the outstanding common stock.

(d) A member of the governing board of an auxiliary organization is interested in a contract or transaction within the meaning of Section 89906, and without first disclosing such interest to the governing board at a public meeting of the board, influences or attempts to influence another member or members of the board to enter into the contract or transaction.