After all, the fact that they have not "caught any autistic people in the class" now does not mean that they will never meet him again in their lives. "The practice continues, we are about halfway through and I am starting to change my mind. Health education classes may not be as unmanageable as I first thought.
After all, the fact that they have now "caught no autistic person in the class does not mean that they will never meet him again in their lives."