Table 1 Demographic Characteristics of Study Participants

Variables	Category	n	%
Region	Eastern	213	20.9
	Central	320	31.4
	Western	346	33.9
	Northeastern	141	13.8
Gender	Male	237	23.24
	Female	783	76.76
Years of Teaching Experience	Less than 1 year	116	11.37
	1-5 years	308	30.20
	6-10 years	185	18.14
	11-20 years	180	17.65
	More than 20 years	231	22.65
Professional Title	Junior	542	53.14
	Intermediate	346	33.92
	Senior	132	12.94
Affiliated Institution	Special Education School	449	44.02
	Inclusive Education School	203	19.90
	Other Institutions*	368	36.08
Disability Types of Students Served**	Physical Disabilities	454	44.3
	Intellectual Disabilities	800	78.4
	Hearing Impairments	307	30.1
	Visual Impairments	153	15.0
	Speech Disorders	560	54.9
	Psychiatric Disabilities	377	37.0
	Multiple Disabilities	433	42.5
	Other Disabilities***	127	12.5
Total		1020	100.00

“Other Institutions” include special education resource centers, special education research and training institutions, service agencies for persons with disabilities, medical rehabilitation institutions, and special education colleges and research institutes.
“Disability Types of Students Served” were defined based on the Classification and Grading Criteria of Disability in China (GB/T 26341-2010). This section was designed as a multiple-choice question in the survey.
“Other Disabilities” (open-ended response) mainly include developmental disabilities, autism spectrum disorders, and similar conditions. Although these types are not separately listed in the GB/T 26341-2010 classification, they are commonly recognized and widely addressed in current special education practice.