Know-It-All Preparatory School believes the following:
- We believe the Bible is the written word of God, inspired by the Holy Spirit and without error in the original manuscripts. The Bible is the revelation of God's truth and is infallible and authoritative in all matters of faith and practice.
- We believe in the Holy Trinity. There is one God, who exists eternally in three persons: The Father, the Son, and the Holy Spirit.
- We believe that all people are sinners and totally unable to save themselves from the results of sin except by God's mercy.
- We believe that eternal life is received by grace alone, through faith alone, in Christ alone, by God's mercy.
- We believe that Jesus Christ is the eternal Son of God, who through His perfect life and sacrificial death atoned for the sins of all who will trust in Him, alone, for salvation.
- We believe in the absolute sovereignty of God. We also believe that people are completely responsible before this holy and sovereign God.