Johanna was Superintendent of Campbell Union School District for nearly ten years. Working in public education in various California school districts for over 35 years, she served as a teacher, an elementary and middle school principal, a Director of Instructional Services, and an Assistant Superintendent of Human Resources.
 
In 2008 she received the YWCA's "Tribute to Women" award, a competitive distinction honoring outstanding women executives in the Silicon Valley. She was also honored by Pepperdine University in January 2010, receiving their Superintendent of Distinction award.