This is a repository of free published standardized clinical assessment tools and how to obtain them.

(Please notify us if you detect a broken link and/or if you would like to suggest adding a measure to this repository)
Acute Stress Checklist for Children (8-17 y.o.)
ADHD Rating Scale-IV
Adolescent American Drug and Alcohol Survey with Prevention Planning Survey  (12-18 y.o.)
Adolescent Diagnostic Interview (ADI; 12-18 y.o.)
Adolescent Drug Abuse Diagnosis (ADAD; 12-18 y.o.)
Adolescent Self-Report Trauma Questionnaire (12-21 y.o.)
Australian Scale for Asperger’s Syndrome (6-12 y.o.)
Autism Research Institute’s Form E-2 Checklist (3-5 y.o.)
Autism Treatment Evaluation Checklist (ATEC; 5-12 y.o.)
Checklist for Autism in Toddlers (CHAT; 18 months)
Child Abuse and Neglect Interview (7-18 y.o.)
Child Dissociative Checklist (5-12 y.o.)
Child PTSD Symptom Scale  (8-18 y.o.)
Child/Adolescent Psychiatry Screen (CAPS; 3-21 y.o.)
Childhood Asperger Syndrome Test (CAST; 4-11 y.o.)
Childhood PTSD Interview (7-18 y.o.)  
Clinician-Administered PTSD Scale (7-18 y.o.)
Comprehensive Adolescent Severity Index for Adolescents (CASI-A; 12-18 y.o.)
Darryl’s Cartoon-Based Measure of Community Violence/PTSD (6-10 y.o.)
Feelings and Emotions Experienced During Sexual Abuse (7-18 y.o.)
General Behavior Inventory (GBI)
Global Appraisal of Individual Needs (GAIN; 12-17 y.o.)
History of Victimization Form (7-18 y.o.) 
Home Situations Questionnaire (HSQ; 4-11 y.o.)
Juvenile Victimization Questionnaire (7-18 y.o.)
Levonn’s Cartoon-Based Interview for Assessing Children’s Distress (6-10 y.o.)
Modified Checklist for Autism in Toddlers (M-CHAT; 16-30 months)
Mood and Feelings Questionnaire (MFQ; 13-18 y.o.)
Mood Disorder Questionnaire (MDQ; 12+)
PDD Assessment Scale (PDDAS; 6-12 y.o.)
Pediatric Emotional Distress Scale (2-10 y.o.)
Pediatric Symptom Checklist (PSC; 6-16 y.o.)
School Situations Questionnaire (SSQ; 4-11 y.o.)
Sexual Abuse Fear Evaluation (7-18 y.o.)
SNAP-IV Rating Scale-Revised (SNAP-IV-R; 6-18 y.o.)
Survey of Children’s Exposure to Community Violence (6-10 y.o.)
Teen Addiction Severity Index (T-ASI; 12-18 y.o.)
Vanderbilt ADHD Diagnostic Parent Rating Scale (6-12 y.o.)
Violence Exposure Scales (4-10 y.o.)
Weinberg Screening Affective Scale (WSAS; 7-17 y.o.)
When Bad Things Happen Scale  (10-20 y.o.)
Young Mania Rating Scale (YMRS; 5-17)