Colo. Rev. Stat. § 22-80-110
Applicants for admission to the school from other states, if within the ages prescribed by section 22-80-109, may be admitted upon payment to the superintendent of such a sum quarterly as the board of trustees determines, to be not less than the total cost per capita of the students for the year immediately preceding the year in which the application is made. A failure on the part of the person so admitted or of his or her parents, guardian, or friends to make such payments to the superintendent shall be just cause for immediate dismissal of the student. No resident of another state or a territory shall be received or retained to the exclusion of any resident of the state of Colorado. The superintendent shall account for all moneys that may come into his or her hands by virtue of his or her office at each regular meeting of the board of trustees in an itemized statement, duly crediting the amounts to the persons from whom they are received.
C.R.S. § 22-80-110