The  objectives  of  this  research  were  to  study  problems  of  personnel  development  on  basic  school  and compare  the  personnel  development on basic  school  under  the  office  of  Chachoengsao  Educational  Service  Area  2  classified  by  position, and experience  educational  qualification. The  samples  were  123  administrators  and  327  teachers. The  instruments  used  for  collecting  the  data  were  five ? rating  scales  questionnaire. Statistics  for  analysis  the  data  were  frequency, percentage, mean, standard  deviation  and  t-test.
	The  findings  were  as  followed:
 	1.  The  problems  of  personnel  development  on  basic  school  under  the  office  of    Chachoengsao  Educational  Service  Area 2  in  overall  and  each  aspects  were  at  moderate  level, besides evaluating  on  staff  development  programs  was  at  high  level.
 	2.  Comparing  the  personnel  development  problems  on  basic  school  in Chachoengsao  Educational  Service  Area 2 as  classified  by  position, in  overall  and  each  items  were  not  statistically  significant  differences. Only  evaluating  the  staff  development  programs  aspect  was  shown  statistically  significant  difference  at  the  level  of  .05
 	3.  Comparing  the  personnel  development  problems  on  basic  school  under  the  Office  of  Chachoengsao  Educational  Service  Area 2  as  classified  by  educational  qualification, in  overall and  each  aspects  were  statistically  significant  difference  at  the  level  of  .05
 	4.  Comparing  the  personnel  development  problems  on  basic  school  under  the  Office  of  Chachoengsao  Educational  Service  Area  2  as  classified  by  experience, in  overall  and  each  aspects  had  not  found  statistically  significant  difference.
