Short answer - no. If you plan to attend a community college, most will ask you to take the AccuPlacer test. This is how they determine where to place you and whether or not you need to do remedial work. Your Associate's Degree from the Community College will suffice as your high school diploma.
If you plan to apply to a 4-year college, then you will need a transcript and some standardized test scores, like the SAT or the ACT. Colleges do not ask for a diploma; they ask for a detailed transcript. This can be prepared by you but needs some verifiable grades on it - not just mom grades.
If you graduate from a 4-year college, no one will ever ask to see your high school diploma.
If, however, you decide to go directly from high school into the workforce, you might be asked by potential employers for a high school diploma or something equivalent, like a GED. Only in this circumstance are you best advised to find a diploma-issuing agency through an accredited online school or to take the GED.