Standards Alone Not Enough to Prepare Students for College and Careers

Apparantly, not all states that have adopted Common Core or other college-ready standards have aligned required courses to meet these standards and/or have allowed students to opt out of some of the requirements.  The Education Trust finds this problmatic.  I find this bizarre.  First, how will students meet the standards if their coursework is not aligned with them?  Secondly, the Education Trust points out that this creates two different "types" of high school diplomas.  Shouldn't all diplomas be created equal?