Source [0]. For reference, that's substantially more than the list price at Stanford, which is $57,693 for 3 quarters in a year [1].

Supposedly the average student receives $48,000 in financial aid, so the average cost per year is $25,900, but that still makes this high school substantially more expensive than a highly prestigious college degree [2].

[0] https://midland-school.org/admissions/affording-midland/

[1] https://studentservices.stanford.edu/my-finances/tuition-fee...

[2]. https://financialaid.stanford.edu/undergrad/how/index.html