(Portland, OR)  --  Portland voters will decide next week on whether to approve the 790-million-dollar bond for Portland Public Schools.  If it passes, funds from the bond will be used to renovate Benson and Madison high schools, and to fully rebuild Kellogg Middle School and Lincoln High School.  PPS officials say the district also plans to use money from the bond for upgrades at Cleveland, Jefferson and Wilson high schools.  Various other improvements and upgrades are also included.