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.
In 1998 the ACHA initiated a work group to develop the ACHA-NCHA, a survey instrument designed to collect information on a broad range of student health behaviors, indicators, and perceptions. ACHA Guidelines-Tuberculosis Screening and Targeted Testing of College and University Students.