Be it enacted by the National Assembly of the Philippines:

SECTION 1. The Filipino national language is declared as one of the official languages of the Philippines, effective the fourth day of July, nineteen hundred and forty-six.

SEC. 2. For the purpose of this Act, all textbooks for the primary schools written in the national language or which are necessary for the propagation thereof, by the medium of public and private schools and other agencies and methods of popularization, shall be prepared under the supervision of the Bureau of Education, subject to the approval of the Institute of National Language in so far as its language form is connected.

SEC. 3. This Act shall take effect upon its approval.

Approved, June 7, 1940.