Table A-1. Data sources for variables included in this report

Variable	Wave 2 youth telephone interview/mail survey	In-person youth interview	Wave 1 parent interview/ survey	Student's school program survey	School/ district student roster
Strengths and interests
Self-concept (nice, proud, able to cope, useful and important)
Has a disability
Feelings about life (depressed, enjoys life, life is full of interesting things to do, hopeful for the future)
Self-determination skills
Competent to tell peers feelings, get adults to listen, get information youth needs
Knows what services needed for disability
Tells professionals opinions on services provided
Academic challenges (school is hard, has trouble completing homework, paying attention)
Getting along with teachers and students
Feels safe at school
School provides services needed to do well
Feels part of school, belongs to school group(s)
Participates at school when has a chance
Enjoys school
Relationships with family, other adults
Relationships with friends
Can find a friends when needs one
Feels lonely, disliked
Sources of support
Youth's expectations for the future
Parents' expectations for youth's future
Disability category
Skills scales (self-care, cognitive, social, persistence)
Ability to understand speech, see, hear, use arms/hands, use legs/feet
Number domains with functional limitation
General health
Age at disability identification/first special education services
Age
Gender
Race/ethnicity
Household income
Attends special school