Sitter Job in Livermore, California

I am researching the possiblity of homeschooling for my daughter who is 10. I am a single parent who works full time, but I can work from home 2-3 days per week, so would need childcare for the 2-3 days I need to go into the office. The expense of child care is the big consideration I have, so would love some estimates from folks. It would be for around 18 - 25 hrs per week, number of hours would very consistent, but the days of the week could be very flexible, and I will need help for at least the next 2 years. This could be a great oppertunity for anyone intersted in education, and I woudl appriciate the help with teaching, but only if you are interested and comfortable with the idea, it would not be a requirment. I am still in the 'exploring ' phase of my decision, so any estimates/ information / ideas you can hep me with would be a great help. Looking for help in either Livermore or Pleasanton.