When I took a test for a mechanic I got 100 present on the test I called my. Diablo school dist thay said the test was no good because one of the people that tests was not there. I took the test again 2 weeks later different questions I missed 1 question management told me I me I needed to back to school for a auto diesel mechanic . This is after I been working as a vech service mech for 19 years.