Many are filling the gap with intern teachers and those with short-term permits.
Amid the state's teacher shortage, California issued more than 10,200 intern credentials, permits and waivers to underprepared teachers so they could work in classrooms in 2015-16.
School employees in 25 school districts or county offices of education who want to become teachers are eligible to receive annual grants of up to $4,000 as part of an effort to add more teachers to the workforce.
The grants support programs that allow students to get a bachelor's degree and teaching credential in four years.
Among the 211 districts that participated in the survey, 75 percent indicated having a shortage of qualified teachers for the current school year.
Most of California's largest school districts filled nearly all their job openings.
One-fifth of California high schools will offer the course this year
Most additional money would feed Local Control Funding Formula.
The state has long struggled with a shortage of math and science teachers.
The Legislative Analyst's Office says a lack of data on teachers creates a policy vacuum.
Substitutes filling in for teachers on leave would be able to stay longer.
The auditor will examine teacher discipline practices in the Los Angeles Unified School District.
Teacher preparation programs will have new curriculum by 2017-18, the state says.
Some districts are hiring more teachers with provisional credentials.
At the same time, the number of short-term and provisional permits increased.