The Classical Academy (TCA) is the largest K—12th grade charter public school in Colorado. Launched in 1997 with 400 students, TCA currently enrolls 3600+ students on three campuses in seven school with one vision. TCA alone is larger than 75% of the public school districts in Colorado. TCA High School was ranked #10 of all Colorado public high schools and ranked #368 nationally out of 21,000 high schools.