All agriculture or grazing school land mentioned in Section 6 of this article owned by any county shall be subject to taxation except for State purposes to the same extent as lands privately owned.
Tex. Const. art. 7, § 6a, under Education.
Tex. Const. art. 7, § 6a
COUNTY AGRICULTURAL OR GRAZING SCHOOL LAND SUBJECT TO TAX
All agriculture or grazing school land mentioned in Section 6 of this article owned by any county shall be subject to taxation except for State purposes to the same extent as lands privately owned.