Within our judicial system, there are many types of clerks. Court clerks (frequently called county clerks) keep track of documents filed with courts; these clerks may also be called civil or criminal clerks, depending on the court in which they work. Courtroom clerks are assigned to particular judges to handle the paper flow in the courtroom; law clerks (usually law students or lawyers) assist judges (and sometimes attorneys) in legal research and writing. Calendar clerks handle the scheduling of trials and hearings.