Hi guys! I was just admitted to Grinnell in February. As an international student, I now have to complete the I-20 Request Form, which requires me to upload a “signed and dated letter” from my parents to confirm the amount of money they can support me annually. Unfortunately, my parents have no idea how to write this (because they’ve never written anything like this before, and they rarely write in English). So do you guys know how to write one, or which information to include? Thanks in advance! 
what about asking someone at the Grinnell admissions office? I would imagine they have answered this before for international students.