This is the technical documentation for the report, "How the College Cost Reduction Act Could Threaten the Teacher Pipeline." The College Cost Reduction Act would overhaul the Higher Education Act, making changes to student borrowing and repayment, borrower protections, college oversight, postsecondary data, and more. The bill includes a new proposed risk-sharing model that would require colleges to repay the federal government for a calculated proportion of their previously enrolled students' unpaid federal student loans--including missed payments and waived unpaid interest, as well as discharged principal under an income-driven repayment program or under the Public Service Loan Forgiveness program. This proportion would be calculated for each degree program at a college using a formula that accounts for college costs charged to students while enrolled and student earnings after they leave. Appendices include: (1) Tables that list the average liability for the top 25 largest bachelor's degree and master's degree programs by cohort size; and (2) Methodology.