(a) The State Board of Education may authorize the purchase of all of the types of securities in which it is authorized by law to invest the permanent school fund in either registered or negotiable form. The board may authorize the reissue of those securities held at any time for the account of the permanent school fund in either registered or negotiable form. The State Board of Education may authorize the sale of any of the securities held for the account of the permanent school fund and reinvest the proceeds of sale for the fund and may authorize the exchange of any of the securities held for the account of the permanent school fund.
(b) In making purchases, sales, exchanges, and reissues, the State Board of Education shall exercise the judgment and care under the circumstances then prevailing that persons of ordinary prudence, discretion, and intelligence exercise in the management of their own affairs not in regard to speculation but in regard to the permanent disposition of their funds, considering the probable income as well as the probable safety of their capital.

(c) When any securities are sold, reissued, or exchanged as provided by Subsection (a), the custodian of the securities shall deliver the securities sold, reissued, or exchanged in accordance with the directions of the State Board of Education.