Failing Or Dropping Grades In School Reports Of Skipping or Dropping Classes Missing Complete Days In School Pays Less Attention To Personal Appearance Pays Less Attention To Responsibilities Always Needing Money Or Always Has Too Much Money Arrests Or Tickets For Vehicle Incidents Confusion Mood Changes Presence Of The Following: > Cigarette Rolling Papers > Pipes > Roach Clips > Small Glass Vials > Baggies > Remnants Of Drugs (Seeds, etc.) > Inhalants > Incense > Air Fresheners > Eyedrops Selling Personal Items Valuables Missing From The Home Spending More Time Away From Home Wants More Privacy Here's some tests you can perform that may give an indication of possible drug use by the test subject. These tests rely on the reaction of the eyes to certain stimuli. Remember, an abnormal test result may also be an indication of a serious medical problem totally unrelated to drug use. Do not base your conclusions on the results of these simple tests alone, but also weigh in any other evidence, or lack of evidence, that may or may not be present. Always seek professional advice. Shine a small light into each of the test subject's eyes. Just a few seconds should be enough. Observe each eye immediately after shining the light in it. The pupils should react by immediately getting smaller. If the pupils do not get smaller, or if they are slow to react, then this is an abnormal reaction. Another test is to hold your finger or similar object in front of the test subject's eyes. Move the object closer to the subject and instruct him or her to follow the object as it gets closer to their face. This should cause the test subject to become cross-eyed as they track the object to within a few inches of their face. The subject should be able to hold the cross-eyed condition. An abnormal test result would be when one of the subject's eyes drifts back to the normal position in less than about four or five seconds. When this occurs, it is called "non-convergence".