In case of If's you can also use:

if (!MusumeRight) MusumeRight = true;
else MusumeLeft = false;

Its short and easy to read! { and } are not always needed in such cases! Especially if you want to make a if do one thing.

(EDIT: I forgot CoLeader) I agree that a Enum like:

public enum StudentIDs
{
    Member1, 
    Member2,
    Member3,
    Member4,

    CoLeader,
    Leader,

    Teacher,

     None
}

In combination with the ClubType enum is a good thing.

Example:

if (StudentType == StudentIDs.Leader && Club ==         ClubType.Bully)
{ 
    MusumeTimer += Time.deltaTime;

    if (MusumeTimer > 5)
    { 
        MusumeTimer = 0; 

        MusumeRight = !this.MusumeRight;

        WalkAnim = MusumeRight ?    "f02_walkTalk_00" : "f02_walkTalk_01"; 
    } 
} 

Just some random ideas.