Santa Rosa City Schools officials on Wednesday approved $15,000 to pay for a voter survey on a potential school bond.

The seven-member board unanimously chose Isom Advisors of Walnut Creek to conduct the survey but the timing of the poll remained undecided.

Voters are likely to see a bond measure on the November general election ballot after board members expressed concern that targeting the June ballot would be too rushed.

Isom will conduct 600 interviews, with special attention paid to Santa Rosa's configuration as two separate districts -#8212; one for middle and high schools and one for elementary campuses. The two districts would have separate votes.

"This is just a baseline pulse check," Superintendent Socorro Shiels said.

Sonoma County's largest school district has turned to voters to support four bond elections since 1991; all were successful. Two bonds focused on the middle and high school campuses, and two bonds targeted elementary campuses. The last was passed in 2002.