Timely effective individual feedback is a hallmark of TPS, and this is where our teachers put most of their time. The amount and quality of teacher feedback is is also one of the things that distinguish TPS from other programs. In our courses the teacher evaluates all major work, including reports, papers, projects, and exams. Teacher evaluation includes an objective grade plus specific feedback for improvement. If a teacher uses a grader, the teacher remains fully engaged in and fully responsible for individual evaluation and feedback. Students can usually expect feedback within one to two weeks after the teacher receives the work in the correct format. For large assignments (e.g., major papers, long lab reports) or during busy periods (e.g., mid-terms, finals) it may take teachers longer to provide feedback. In principle, our intent is to provide feedback before the next evaluation on the same material or skills.