ohnson School Bus Service Inc in Port Washington, WI is a private company categorized under Buses-School Transportation Service. Our records show it was established in and incorporated in Wisconsin. RAaron W. Johnson founded Johnson School Bus Service in August 1942 when he converted a milk truck and two logging trucks into West Bend's first school buses. Today we have eleven terminal locations serving 14 school districts in southeastern Wisconsin. A total of 500 part-time and 50 full-time employees operate and maintain a fleet of 500 vehicles!