rt_data                 Assemble two-attempt repeater data
rt_evidence             Evidence statistics for each repeater
rt_fit                  Fit the expected-gain model
rt_raw_gain             Raw-gain flagging (the common practice, as a
                        baseline)
rt_risk                 Calibrated risk index for repeat test-takers
rt_simulate             Simulate repeat test-takers with known
                        misconduct
