Philosophy of Teaching...

     The whole body of Christian educational theory rests upon the recognition that all truth is of God. He is the God of truth (Ps. 31:5); His Son is the Lord of truth (John 14:6); His Spirit is the Spirit of truth (John 14:16-17). All truth, whether discerned or undiscerned by man, comes forth from a single source and, therefore, is one harmonious whole. Consequently, God's written self-revelation is the starting point of all rational inquiry and the guide to all interpretation of reality. No concept can be true that conflicts with the statements of the Scriptures. Conversely, no untruth is a legitimate support of divine revelation or has any place in the ministry of spiritual truth. A reverence for the God of truth compels a conscientious regard for accuracy in all areas of factual investigation and reporting.

     Since it is the purpose of Christian education to develop redeemed man in the image of God, Christian educators must point students to the original of this image, God Himself. Students come to know God by studying His revelation of Himself in His Word and in His works. Of these, the more fully revealing of God is His Word; and, therefore, the Bible is the center of the Christian school curriculum. The Bible is not only the most important subject matter but also the source of the principles determining the other subject matters and the way in which they are taught. The presentation of Biblical truth is thus not confined to a single segment of the curriculum--the study of the Bible--but diffused throughout the teaching of all subjects. The teacher's knowledge of the Scriptures controls his selection and interpretation of materials and determines his whole perspective on his subject matter. The Scriptures possess this privileged status in the curriculum, for they are the primary means of conveying the knowledge of God.

     This knowledge of God implies more than just knowledge about God. Certainly an acquaintance with the facts about God in the written revelation is important. But the knowledge of God that is unique to Christian education is a personal knowledge that begins with repentance of sin and faith in Jesus Christ as Saviour and develops through obedience to and communion with God. To know God is to be born into the family of God and to live in fellowship with Him (I John 5:20; Phil. 3:10). It follows that without a student body composed mainly of students possessing this personal knowledge of God, no school can legitimately be regarded as a Christian educational institution.

     Though the Word of God is the main source of the knowledge of God, both factual and personal, and therefore deserves precedence, the works of God are also an important part of the Christian school curriculum. The creation reveals the Creator, and that which reveals God is a proper study for man. Indeed, the Scriptures themselves invite man to consider God's earthly handiwork and hold him responsible for recognizing in it the work of God (Job 38-39; Rom. 1:18-20).

     Especially is God revealed in His rational creation, man, who having been created in the image of God is the highest of God's works on earth. It is for this reason that the Christian school gives emphasis to the "humanities": the study of man's language, his literature, his artistic achievements, the record of his history, the logic of his mathematical reasoning, and other forms of his personal and cultural expression. But the natural sciences are not disregarded. The glories of the vast universe and the myriad wonders of man's earthly habitation testify that their Creator is a God of order, of beauty, and of power (Ps. 19:1; Rom. 1:20). The perfect suitability of man's physical environment to his needs and the fact that God committed the earth to man to subdue and enjoy (Gen. 1-2) witness to the goodness of God in His love for and delight in His human creation. Though the study of nature has often displaced the study of nature's God, even to the point of man's worshiping the creation rather than the Creator (Rom. 1:25), nevertheless God Himself pronounced the material universe "good" and established its laws and processes as means of accomplishing His will for man (Gen. 1:31). The Christian school curriculum includes astronomy, physics, chemistry, biology, mathematics, and related subjects because they provide a knowledge of God's nature and His work in this world. In the curriculum of the Christian school, the voice of creation joins with that of the written revelation in praise of the glory and goodness of God.

As taken from:
The Christian Philosophy of Education
Christian Education: Its Mandate and Mission
BJU Press
https://www.bjupress.com/resources/christian-school/solutions/philosophy-education.php