The average principal salary at Dekalb Isd was $72,030 , which is 30 percent lower than the average salary for this job in Texas, and 39 percent lower than the national average for this job . Principal salaries at Dekalb Isd typically range from $68,000 to $80,089 (25th to 75th percentile). The highest reported principal salary was $80,089. There are 3 employees at Dekalb Isd with the job title principal.