One-half of the outstanding principal amount of loans guaranteed by the corporation and owned by a lender as of January 1 each year shall be deductible from the assets of the lender when determining the value of shares of the lender, or when determining the net worth of the lender, for purposes of any ad valorem taxation imposed on the lender by the state or by any political subdivision of the state. All income earned by a lender on loans guaranteed by the corporation shall be exempt and free from any type of income tax imposed on the lender by the state or by any political subdivision of the state. It shall be the duty of all revenue and tax officials of the state and of political subdivisions of the state to enforce and give full force and effect to this Code section and to 189 20-3-287 the intent, hereby expressed, of the General Assembly better to assure through this means the accessibility of educational loan funds to local citizens and persons from local lending institutions. (Ga. L. 1964, p. 735, § 11; Ga. L. 1965, p. 217, § 12; Ga. L. 1976, p. 415, § 2; Code 1933, § 32-3328, enacted by Ga. L. 1980, p. 835, § 2.) 20-3-286. Conflicts of interest involving directors, officers, or employees of corporation. If any director, officer, or employee of the corporation shall be interested, either directly or indirectly, or shall be a director, officer, or employee of or have an ownership interest in, other than a noncontrolling stockholder interest, or the substantial equivalent thereof, in a lender or school, any firm or corporation interested, directly or indirectly, in any contract with the corporation, except any agency, instrumentality, or political subdivision of the state, such interest shall be disclosed to and shall be set forth in the minutes of the corporation; and the director, officer, or employee having such interest therein shall not participate on behalf of the corporation or such party in the negotiation or the authorization of the contract. No provision of this part, other than Code Section 20-3-289, shall be construed, however, to prevent any otherwise eligible director, officer, or employee of the corporation or member of his family from being eligible to apply for and receive educational loan assistance under this part. (Code 1933, § 32-3330, enacted by Ga. L. 1980, p. 835, § 2.)