First, your familiarity with school law and your son's school district's policies are not those of an experienced attorney. Secondly, you may be too close to the situation AND your son may not truly be comfortable with telling you everything involved. Most importantly, his future is on the line - an explusion from school can be quite damning.
Therefore, the simple answer is YES!
If you do not know who to contact, your local bar association should have a referral system in place. Get some names and then do some computer review to review their website and "google" the attorney. This should provide you with a start to make an appointment for you and your son. Hopefully, you will both feel comforable with the attorney and the resultant strategy.
Answered on Sep 11th, 2017 at 8:27 AM