All but four of Loudoun County's 62 public schools, or 93.5 percent, made adequate progress this year on raising test scores under the federal No Child Left Behind Act, according to the results of Standards of Learning exams released Tuesday.

That's up from the 2003-04 school year when 54 of 59 schools, or 91.5 percent, reached the mark.

The law requires that all students be "proficient" in math and reading by the 2013-14 school year, which in Virginia means passing SOL tests. Before then, schools must meet progressively higher targets.

Schools also must track groups of children separately, including low-income students, certain racial groups, disabled students and those with limited English skills. If even one group fails to hit the target, the school has not made "adequate yearly progress," or AYP.

The schools that did not make AYP in 2004-05 were Dominion High School, Harmony Intermediate School, Sterling Middle School and Sugarland Elementary School.

For a school to make adequate yearly progress this year, 65 percent of students must pass in reading and 63 percent must pass in math. The rate was supposed to be set higher this year -- 70 percent for both subjects -- but the federal government approved the lower rate this month after Virginia education officials requested that it be modified to allow more gradual improvement.

Dominion passed all 29 SOL categories except African-American Math. In 2003-04, Dominion passed 27 of 29 categories. Harmony passed all categories except Special Education English. Sterling missed in two categories, Limited English Proficiency Math and Free and Reduced-Price Lunch English, and Sugarland fell short in Limited English Proficiency English and Free and Reduced-Price Lunch English.

Blue Ridge Middle School has a "no designation" AYP rating because it houses sixth- and seventh-graders who did not take SOL tests during the 2004-05 school year. That will change this year as SOL tests are expanded.

Schools that made AYP in 2004-05 after failing to do so the previous year are Heritage High School, Park View High School, Potomac Falls High School and Seneca Ridge Middle School.

The figures, released by the Virginia Education Department, are subject to change. Last year it was determined that Harmony Intermediate and Sterling Middle made AYP after their data were recalculated.

Report cards for all public schools in Virginia can be viewed at