Schedulizer is independent of Cornell. Its database is drawn from whatever is updated on the particular school's schedules. However, many classes often have last-minute lecturer/professor/TA assignments/Room assignments so these may be listed as "TBD
Schedulizer also does not recognize pre/co-requisites.
@bob247: Schedulizer is simply a TOOL to figure out your schedule in lieu of using only the Cornell Courses of Study. You will need to REGISTER on Student Center for those classes that you picked out.
To clear up the process for the both of you:
1. Register your cornell.edu with schedulizer.com
2. Identify your preferred schedules.
3. Write down the CLASS # corresponding to your preferred time/lecturer/TA session. This number is NOT the class code. For example, ( MATH 1920 - Cornell University - Schedulizer
) The class code is MATH 1920. For the lecture, there are multiple times available and the last column has a unique class #. There are also multiple discussion sections available and the last column has a unique class #. YOU WILL NEED ONE # FOR EACH OF THE LECTURE AND DISCUSSION THAT YOU WANT (and maybe some backups too)
4. On registration day go to studentcenter.cornell.edu expect this system to crash due to the heavy traffic. If you haven't heard of studentcenter.cornell.edu by now you should be worried... You should have access to it as soon as you have a cornell email. The class registration will be locked by you should be able to at least log on to this system
5. In the "add a class" section you will need to TYPE IN THE CLASS NUMBER. not the class code, or prof's name, or time or etc. Nothing else matters. The class number is the unique identifier and Schedulizer should be accurate except for some serious last minute changes. Blue Squares indicate "closed" meaning no space left and Green Circles indicate "open" meaning space remains.
6. If you entered the lecture class #, and a discussion section is required, it will display that you have selected a lecture and prompts you to select a section by displaying all of the discussion sections.
If you entered the discussion class #, it will prompt you to select a lecture by displaying all of the lectures. If there is only one lecture available, entering the discussion class # will AUTOMATICALLY select the lecture for you. (THIS MEANS IF THE CLASS ONLY HAS ONE LECTURE, ENTER THE DISCUSSION CLASS # TO SAVE TIME. trust me, with such a busy server load, this is the difference between getting a spot on registration or not)
7. The class will be added to your "cart". At this point, it does NOT mean that you are registered. You must select "proceed to checkout (or something along these lines)" and click through some confirmations before you are registered for that class. I would recommend doing this for each class you select for the best chance at your preferred classes. However, you may search for multiple class #'s and add them all to your cart before "checking out". When you do so, all classes that still had availability will go through (green checkmark) and any of them that failed will receive an error (red X).
8. Hope everything went through. Cry if they didn't. Fix the errors by selecting a different class/section.
9. Check your schedule if you think you've added everything you've wanted. There should be a "weekly calendar view" somewhere under "my class schedule". Select one or two weeks into the semester (PE doesn't start on the first week or two) and if you've selected any evening classes, change the "end time" to 9:30pm. What you see here will be your schedule. If you think you registered for a course and it doesnt show up here, YOU DID NOT REGISTER FOR THE CLASS.
10. FWS's are annoying and I don't think this process applies at all to them at the beginning. Whatever class you get from the lottery will be AUTOMATICALLY added to your studentcenter schedule regardless of conflicts. You will then have to "swap classes" to fix any errors. However, Schedulizer should have fairly accurate times for FWS (they are most prone to last minute changes) and you can prepare your schedule accordingly. remember it's a lottery though...
11. Spend the rest of the semester lamenting your terrible course choices. Uh... I mean celebrate your wonderful schedule!