M.Y.
Hi S.,
I'm not really sure about schools in Prince William County. I'm your neighbor in Fairfax County. In Fairfax you can pupil place a child based on before and after shool care if your home school doesn't provide the SACC program (before and after care) or if the SACC program is fully subscribed.
SOL scores, in my opinion, grade the teachers performance. However, this isn't always a fair grade because the teacher may have many students with many different issues like:English is their second language, they don't get enough parent support at home, they have learning disablities. Most teachers teach because they love children. Like all professions you will encounter some that perform better than others.
How active is your school's PTA/PTO? What type of budget do they have and how do they supplement learning at Williams? For example, do they provide Hands on Science or Mad Science after school? Do they supply "learning" assemblies to the children like visiting authors, the "bug lady" to the 2nd graders to supplement the science circ. on bugs, how do they do Colonial Day for the 4th graders and Medieval day for the 5th graders? All of these questions/answers will help you determine the type of school Williams Ele is. My suggestion to you is call the PTA/PTO president. As him/her to tell you about Williams. You will learn during this conversation. Tour the school schedule a meeting with the principal and get involved as much as you can. When my children were in kindergarten ( I now have a 7th grader and a 4th grader) I was in their classrooms at least twice a month volunteering. I get involved it the schools. I know all the teachers, administration and staff at the elementary school and I am now know everyone involved with my daughter at the Middle School. I have made some great friends and I know what's going on. In my opinion being active in the classrooms and being on the PTA is the best way to help your children with their education. You become "partners" with the people at the school who are educating your children.
Hope this is helpful.
M.