And for that there is a problem with the old course, he filed his first pull one at a time, because the new courses open to students to learn, it does not affect students who have learning problems with the installation.
And for the study of problems in older subjects. I let him keep his subjects individually indefinitely because the opening of new courses teach students. It does not affect students who are concerned with the study of the old already.
For education and having problems in old subjects Then he keeps by his subjects indefinitely because is also open a new course for students to learn It doesn't affect the students on learning problem of old