[…]

(2) The provisions of subsection (1) of this section shall not apply to a child:

[…]

(b) Who is enrolled for a minimum of one hundred seventy-two days in an independent or parochial school which provides a basic academic education. “Basic academic education” for the purpose of this article means the sequential program of instruction provided by an independent or parochial school. Such program shall include, but not be limited to, communication skills of reading, writing, and speaking, mathematics, history, civics, literature, and science.

Ref: C.R.S. 22-33-104