This document contains a report on four Senate bills from the Wisconsin Legislature concerned with sexual assault. Part I of the report describes key provisions of the four bills: (1) 1991 Senate Bill 178, which codifies a 1987 Wisconsin Supreme Court decision on excluding certain persons from preliminary examinations in criminal sexual assault cases and revises current statutory language relating to permissive closure in criminal sexual assault cases; (2) 1991 Senate Bill 179, which revises certain crimes against children to replace older provisions; (3) 1991 Senate Bill 180, which revises the definitions of "sexual contact" and "sexual intercourse" as those terms are used in the criminal sexual assault laws; and (4) 1991 Senate Bill 181, which creates limitations on the discovery of information concerning a sexual assault victim's past sexual conduct in civil actions based upon conduct which constitutes sexual assault. Part II of the report discusses committee activity related to the four pieces of legislation. Parts III, IV, V, and VI describe Bills 178, 179, 180, and 181, respectively. A list of committee materials is appended. (NB)