Supporters of Measure C, the annual $144 parcel tax measure to replace the expiring $90 tax for the San Ramon Valley Unified School District, will be hitting the streets this weekend to spread the word about the upcoming ballot measure. Precinct Walk organizer Patty Hoyt said the event will get under way at 9:30 a.m. Saturday morning in the quad outside their campaign office at 2694 Bishop Road. Hoyt said a high school band will play for the volunteers, and speakers are being arranged. She said they are expecting from 200-300 volunteers to attend, get packets with neighborhood information, and hit the streets. The group is expected to canvass as much of the school district as possible over the weekend. Another Precinct Walk is set for the weekend of April 18. Hoyt said that these walkers will be reminding residents to get their ballots in the mail well before the May 5 election day. Ballots should begin arriving in residents' mailboxes around April 5.