Abstract: A method of software defect prediction by a computer is provided. The method comprises identifying software test organizations scheduled to perform testing on an application or applications, where the scope of the software testing varies between different test organizations, identifying the type of test cases to be executed by each test organization, where the test types comprise at least one of new functionality test and regression test, and identifying a planned number of test cases to be executed for each test type. A forecast number of defects are modeled by a computer based on the planned number of test cases to be executed and a defect rate for each test type. The development staffing level capable of fixing forecast defects by the scheduled completion of testing is calculated by the computer based on a fix capacity of a software development organization. Development resources are assigned to fix defects based on the calculated development staffing level.