Impeding traffic
MCL 257.676b(4) makes this a civil infraction. MCL 257.676b(1) prohibits blocking, obstructing or impeding traffic by means of a barricade, object or device or with a person, which is not the operation of a motor vehicle, so the residual 2 point clause in MCL 257.320a(1)(u) does not reach it and no other subdivision of the schedule names it. It adds no points to the driving record. A Michigan district court fine schedule shows the same 0 points. Courts sometimes allow a ticket to be amended to this offence; whether that happens is up to the court and the prosecutor, and nothing on this page can promise it.
What the points do
A Michigan court that convicts a driver of a moving violation sends an abstract of the conviction to the Secretary of State, and the point value from the schedule in MCL 257.320a attaches to that abstract. Points stay on a record for two years from the date of the conviction. A non-moving violation produces an abstract with no points on it, which is the whole of the difference behind a plea to one. How points reach the record goes through this in full.
The basic driver improvement course
MCL 257.320d does not cover this kind of violation, whatever a particular driver's record looks like. The exclusions in subsection (3) work by the kind of offence, and a violation that adds no points to a record has nothing for the course to withhold.
This is general information from a driver-safety school. It is not legal advice. Your court can tell you what it requires, and an attorney you hire can answer questions about your own case.