@John ********
. A lot of people in the past have used ed visas just to stay here and didnt study seriously. Hence why they may test you to see if you are a genuine student. Like any other visa to stay long term ,they will want to know you can financially support yourself while here too.
They're just stricter on rules now.
If you've studied properly and can support your stay financially, then you should be fine. Be prepared for an interview wether it happens or not.