Minnesota assessors must be licensed by the Minnesota State Board of Assessors.  To be certified by the State Board, an assessor must first successfully pass three week-long courses on assessment procedures and appraisal practice, and serve a one year apprenticeship under a licensed assessor.  In St. Louis County, new assessors are also required to complete a seven day training program taught by County staff.  Assessors have a continuing education requirement of 40 to 50 hours of training over each four year period.  Beyond this, there are additional State Board requirements for appraising income producing properties and performing more difficult assessment functions.