<p>Even if your stepfather & mother had a pre-nuptial agreement that he would not pay for your college education, that just would not fly! Third party agreements are not recognized. </p>
<p>If your stepfather has children from a previous marriage & they are his “dependents” then that is usually recognized. You haven’t said if you have step siblings or what your biological father’s situation is either! That comes into play, if you have a stepfather, a mother & then a father & a stepmother, all who work! That is 4 incomes! It all will depend on the school’s policy toward non-custodial parents, and public vs. private schools.</p>