Only one student has been expelled at Clarkston High School this year.That compares to about 10 last year, which was a typical number for the last several years.Principal Gary Kaul attributes the sharp drop in expulsions to a package of new state laws that require school districts to consider "restorative practices" rather than automatically suspending or expelling students with disciplinary issues, with the only exception being if a student brings a firearm to school.