How do I validate a field using names in Excel spreadsheet only

Question

I am new to PDF forms and I need to create one with a text field that is validated against a list of 300 names, to ensure the names are spelt correctly by the person completing the form.  Short of creating a dropdown box and manually typing in the 300 names, is there an easy way to do this?
I have exported the form from Indesign as an interactive PDF, then created all the fields and now the client has asked for this??  The names are held in an excel spreadsheet.
Also, second questions, is there an easy way to automatically generate a second form, rather than saving each form individually.  Basically one person could be completing 30-40 forms which each will need printing out centrally and rather than saving as the name of each person they are completing it for, is there an easy way to do this?
Many thanks for any help you can offer, but please explain simply as I am new to all this. 

Answer 1

Thanks Gilad,
Issue 1# - the list should only change a few times each year, so how I will google how to hard-code it in a script as you suggest, sounds just what I was looking for, rather than a drop down with 300 names.
Issue 2# - the form is a certificate with various options on, which are now fields, and each tutor may have between 12 and 60 to complete and then forward back to the office to be printed centrally.  So, is there a way that you can automatically create another blank form once one is completed until all the certificates are completed for the number of pupils and then save them all in the one file to email back to the office, or will each one need to be submitted individually for printing.
Many thanks for your help