The  purposes  of  this  research  were  to  study  and  compare  about  the  satisfaction in  work  performance  of   teachers  under  the  Office  of  Chachoengsao  Educational Service Area II. This  research  was  classified  by  school  size  and  teaching  experience. The  target group  consisted  of  327  teachers. The  instrument  used  for  collecting  the  data  were  five rating  scale questionnaires. Statistics  for  analysis  the  data  were  frequency, percentage, mean, standard  deviation , t-test, ANOVA and  examined  in  suiting  Scheffe' method.
	The research results revealed that :
	1.  The  satisfaction  in  performance  of  teachers  under  the  Office  of  Chachoengsao Educational  Service  Area II  had  shown  at  a  high  level.
	2.  Comparisons  the  outcomes  of  satisfaction  in  performance  of  teachers  under  the Office  of   Chachoengsao  Educational  Service  Area II  Which  was  classified  by  school  size reflected  statistically  significance  difference  at  the  level  of .05 as  the  overall  performance and  individual  factors. When  was  classified  by  motivation  factor  had  shown  statistically significant  difference at .05 level, except  achievement  and  recognition  sub-factor. And  also, there  was  statistically  significant  difference  at .05 level  on  hygiene  factor  except  the working  conditions  sub-factor. 
3.  Comparisons  outcomes  of  satisfaction  in  performance  of  teachers  under  the  Office  of  Chachoengsao  Educational  Service  Area II  which  classified  by  teaching experience  were  .05  level  of  significance  as  the  overall  performance  and  individual  factors. When  was  classified  by  motivation  factor  had  shown  statistically  significant  difference  at  the  level  of  .05, except  achievement, recognition, the  work  itself  and  responsibility  sub-factor. And  also, there  was  statistically  significant  difference  at  the  level  of .05 on  hygiene  factor  except  the  working  conditions.
