not sure about the second q
Yes u can(to the 1st q
), but it depends on ur program. For ENG, if u have a avg around 3.5 to 4 (4 is the min) you can use summer school to bump ur avg up and get back in.
Also, I believe that there is some date in summer, where in u need to have the min mark to carry on with second term SS courses.
hope that helps