You can always leave, during or after the probation period, given that you fulfill some contractual requirements (like telling them some weeks in advance, see your contract). Employment is no prison. For more information, see http://en.wikipedia.org/wiki/Probation_%28workplace%29
Screening is conducted to identify or predict students who may be at risk for poor learning outcomes. Universal screening assessments are typically brief, conducted with all students at a grade level, and followed by additional testing or short-term progress monitoring to corroborate studentsâ risk status.
Chart of Evidence-Based Screening Tools for Adults and Adolescents. Screening, Assessment, and Drug Testing Chart - Provides validated tools to guide screening, evaluation, and referral to treatment of patients with a substance use disorder. NIDA Drug Use Screening Tool Support Materials. Quick Screen: For All Patients.