Cost of education versus tuition

Here is a description of the “Instruction-Total Amount” variable on the IPEDS site:

Although IPEDS has separate expense categories for “Research”, it’s not clear to me how these are distinguished from the “departmental research” expenses mentioned above. I would expect “Instruction” expenses to include the salaries of all faculty who teach classes, even if those salaries also cover research activities. The salaries of medical and law school professors must drive up the Instruction expenses much more than the salaries of college instructors.

Stanford’s “Instruction - Total Amount” is ~$1.4B, or about $89K per FTE student;
Pomona’s is $0.06B, or about $36K per FTE student;
Berkeley’s is $0.73B, or about $20K per FTE student;
Truman State’s is $0.5B, or about $9K per FTE student…

According to College Scorecard, for family income of $48,001-$75,000,
the average net cost to attend Stanford University is $6,240;
the average net cost to attend Pomona College $6,964;
the average net cost to attend Truman State is $12,929;
the average net cost to attend UC Berkeley is $13,944;

However, the College Scorecard numbers don’t differentiate in-state v. OOS students.
According to IPEDS data for 2013-14, for family income of $48,001-$75,000,
the average net cost for an in-state Title IV federal FA recipient to attend Truman State was $11,829;
the average net cost for an in-state Title IV federal FA recipient to attend UC Berkeley was $13,192.