Student cards are as much valid ID as staff security passes, Costco cards, and gym membership cards.
How can electoral officials be expected to recognise a student card from every college in Texas (I know, I know - they can’t - the point is to make the system completely unworkable). They might as well petition the judge to allow anyone to vote as long as they can fish out a plastic card with a photo on it. Why does the photo even need to be yours? Why does it even need a photo?
Why should anyone even have to register to vote — you should be able to just walk into any — and as many — polling places as you like and vote... (/sarc, of course)
In CA they have “motor-voter” registration, where you just get a registration form and send it in — occasionally, when anyone happens to check, they find 40 non-existent voters registered to a vacant lot.