This  research  aimed  to  study  and  compare  the  satisfaction  of  students  towards  the  
teachers,s  instruction  of  non-formal  education  service  center  in  Muang  District : Chonburi  province.  The  students  were  grouped  based  on  gender  and  age.  The  sample  groups  were 225  non-formal  upper  secondary  level  students  in  second  semester  of  academic  year  2006 Data  collection  tool  was  a  set  of  5-rating-scale  questionnaire.  Percentage, mean  standard  deviation  and  t-test  were  employed  for  data  analysis
              The  research findings revealed  that :
 	1.  Non-formal  upper  secondary  level  students  had  the  high  level  of  satisfaction  both  in  overall  and  individual  aspects  towards  the  instruction  of  teachers  as  ranked  by  mean  scores; individual  in  inherit,  the  result  of  non-formal  education  conclusion,  academic  diversity, and  the  last  priority  was  individuality.
  	2.  By  comparing  with  gender  and  age, it  was  found  that  the  students  had  the  high  level  of  satisfaction  with  statistically  significant  difference at  .05  

