How to populate fields?

I may be doing something wrong --but I cant seem to get this app to work. Does it work with Jotform4?

I have only one form called Lesson Tracker

I would like each form to be prefilled with lesson time, student name and selection of instructor (by admin person). -then when student shows up for class, I would like for them to complete the rest of the form (lesson survey) and sign it. Is this possible?

Yes, that's possible through URL parameters.

Example:

https://www.jotform.com/70197241994161?timeOf4[0]=1&instructor[0]=1&studentName=John%20Doe

Here are the field names used with its sample values used in the above URL.

For time lesson field --> timeOf4[0]=1

If you want to populate the second option you can use timeOf4[1]=1 just increment the value inside the square braces.

For instructor field --> instructor[0]=1

For student name --> studentName=John Doe

Here's a full guide:  http://www.jotform.com/help/71-Prepopulating-the-fields-to-your-JotForm-via-URL-parameters