The purpose of this research was to study the factors affecting parents decision making sending their children to study in Chachoengsao Municipal schools and to compare factors affecting parents decision making classified by parents sex, age, educational level and occupation. The samples were 381 students parents in Municipal schools. The instrument used in this research was a questionnaire of 5 rating scales. Its reliability effectiveness was .94. The data were statistically analyzed by using means, standard deviation, t-test and F-test.
	The results revealed as follows:
 	1.  The factors affecting parents decision making to send their children to study in Chachoengsao Municipal schools were at high level. They were school personnel, school images,  academic administration, testing results, community relation, school buildings and environment and school legitimacy, respectively.
 	2.  Comparison of factors affecting parents decision making classified by sex, it was found no significant difference.
 	3.  Comparison of factors affecting parents decision making classified by age, it was found no significant difference
 	4.  Comparison of factors affecting parents decision making classified by educational level, it was found no significant difference
 	5.  Comparison of factors affecting parents decision making classified by occupation, it was found no significant difference.
