Diff between School of/for English Language.Has/had/have problem.

What is the difference between these two?

School for English Language

School of English Languag

Please read and make the changes appropriate.

My teacher has asked to do three asignement one week before.After one week teacher told why shoud you have done all three.

Since you had asked me to complete the three assignement , i had completed the three.
Now the assignement is undone.


I had/have/was done some work a month ago.Now the work is/has/had undone.or Now i have undone the work.


Regards

Seeker