BROOKLYN - Getting away with a crime at schools in Brooklyn and the rest of the city is getting more difficult. A new report says more than 2,500 complaints were filed in 2006 that accused school employees of various crimes, a 38 percent increase from the previous year. Richard Condon, the city's special schools investigator, found enough evidence to substantiate 259 of those claims. The most common accusation was of sexual misconduct, ranging from criminal acts and inappropriate relationships with students over the age of consent, to physical and verbal harassment.