The percentage of new recruits entering the Army with a high school diploma dropped to a new low in 2007, according to a study released Tuesday, and Army officials confirmed that they have lowered their standards to meet high recruiting goals in the middle of two ongoing wars.

The study by the National Priorities Project concluded that slightly more than 70 percent of new recruits joining the active-duty Army last year had a high school diploma, nearly 20 percent lower than the Army’s goal of at least 90 percent.

The National Priorities Project, a Massachusetts-based research group that examines the impact of federal budget policies and has been outspoken against the Iraq war, said the number of high school graduates among new recruits fell from 83.5 percent in 2005 to 70.7 percent last year.

The study also found that the number of “high quality” recruits – those with both a high school diploma and a score in the upper half on the military’s qualification test – has dropped more than 15 percent from 2004 to 2007. After linking the recruiting data to Zip codes and median incomes, it found that low- and middle-income families are supplying far more Army recruits than families with incomes greater than $60,000 a year.