Education.com isn't a school, isn't your son's school. You should call or visit your son's school to find out if they have an on-line system for this.  There are several.  In my school district, the schools use schoolloop.com.  At the beginning of the school year, the kids bring home an instruction sheet telling us, the parents, how to sign up for schoolloop and get an ID that is then tied to our kids.

After we do that, we can sign in to schoolloop and monitor our kids' progress.

Your school might have a similar system, but you'll need to talk to the school directly to learn abut it.