May I update your data, oldbill?
Average cost per pupil in Fairfax County: $13,407
Average cost per pupil in Prince William County: $10,429
Last year's increase in the number of Hispanic students in Fairfax County, Sep 05-Sep 06: 592
This year's increase in the number of Hispanic students in Fairfax County, Sep 06-Sep 07: 1,490
Since then, "between September and March 31 ... 623 ESOL students from Prince William enrolled in Fairfax schools."
You specifically mention enforcement in Herndon. South Lakes and Herndon are adjacent high schools and both are in Fairfax County. Since the beginning of this school year the student population has declined at Herndon by 50 but has increased at South Lakes by 19.
Can the ILLEGALS just send their children to these schools or do they actually have to move to the school district? Remember, laws & rules do not apply to them. Many cross the border every day to go to public schools and the taxpayers have to foot the bill for those children.