RenWeb allows a teacher to customize grade calculations for each class and then automatically calculates grades in a running format. You can enter categories such as quizzes, homework, labs, tests, exams, classwork, etc., and assign percentages for each category and RenWeb will weight the grades accordingly and do all the calculations, saving a ton of time. Also, RenWeb allows the option of dropping a teacher-specified number of grades in a category at the end of a grading period. Additionally, RenWeb keeps track of attendance, lesson plans, and homework assignments, and keeps everything in one place. This makes report card time a breeze at the end of each semester.
RenWeb is not very intuitive in many aspects, and required redundant work in others. For example, when the teacher enters the semester exam grades so they appear on the students' view when the students (or parents) log in to check grades, RenWeb will not pull those grades to fil the report card. All other grades that have been entered on the same screen will appear, but not the exam category. The semester exam must be entered by hand in a separate log-in on the report card or RenWeb will not print the exam grade on the report card. The system is smart enough to pull quarter grades across for the report card, but not smart enough to pull exam grades across for the report card, even though the system has a blank for it. You must double the work and manually enter every exam grade twice.
RenWeb is very expensive for what you get. There are other options out there that appear to do the same thing at a fraction of the cost. It appears that RenWeb has a large market share due to its promotion among ACSI-accredited schools. I would encourage schools to consider other cost-effective options that are available through Microsoft and Google before sinking so much money into RenWeb. Don't pay for frustration if you can get it for free or significantly cheaper somewhere else.
Tracking student attendance, including absences and tardies, in individual classes allows for easy compliance with state course attendance laws. RenWeb's instant updating of the grades allows students to track their progress throughout the semeseter and makes it easier for teachers to notice when a student is struggling.