As far as I understand, the 'main creation science' is as written in the Bible in Genesis. That doesn't classify as science class material.
The description of God’s miraculous creation of the earth is indeed found in Genesis. So is the account of the world wide flood.
Creation science presupposes these incidents to be true. So, Biology, Chemistry, Geology etc. are taught from these presuppositions.
For example in Geology we learn the principle of superposition, creation/formation of various strata, petrification and so forth, and in Biology we learn about cells, plant life, reproduction, DNA, micro (as opposed to macro) evolution, all without the imposition of evolutionary thought.